Isabella × Kaspar: Library Date — 45s (伊莎贝拉 × 卡斯帕｜图书馆情侣日常)
Watch Isabella × Kaspar: Library Date (伊莎贝拉 × 卡斯帕｜图书馆情侣日常 45s), a 45-second photorealistic video experience set in the Harrypotter world. Three 15-second scenes in the same candlelit Hogwarts library corner: Slytherin transfer student Isabella Vega and Ravenclaw's Kaspar Rosen tease each other, swap secret notes, realize they are investigating the same person — and hide the evidence together when footsteps approach. Handheld-vlog style with real English dialogue, burned-in Chinese subtitles and natural library audio. Generated with Seedance 2.0 from a shared duo reference, published as a browser video app.
Final Product: Isabella × Kaspar — Library Date 45s
Cover
The 16:9 key-art cover generated with GPT Image 2: Isabella and Kaspar lean toward each other across a candlelit library table — green-and-silver Slytherin robe against blue-and-silver Ravenclaw, an open grimoire, scattered parchments, a quill and warm beeswax candles beneath towering shelves.
Screenshot
Live app, 0:07 — Kaspar twirls his quill and answers Isabella's stare: “I'm studying your study method.” The handheld-vlog look, warm candlelight and burned-in Chinese subtitles are all part of the final video.
Screenshot
Live app, 0:37 — the couple realizes they are investigating the same person: “Normal couples go to Hogsmeade, you know.” Kaspar's blue-and-silver Ravenclaw robes frame the shot.
Isabella × Kaspar: Library Date (伊莎贝拉 × 卡斯帕｜图书馆情侣日常 45s) is a 45-second browser video experience set inside the world of Harrypotter. One night in the Hogwarts library, in a corner by a tall window, Slytherin transfer student Isabella Vega and Ravenclaw's Kaspar Rosen sit down to “study” — and spend three 15-second scenes trading sharp lines, exchanging secret notes, discovering they are investigating the same person, and hiding the evidence together when footsteps approach.
From a one-line seed about a library date where nobody is studying, Neta Studio generated the whole world — and then this complete 45s couple life-slice, with photorealistic footage, real dialogue and real generation prompts, in minutes.
Watch it now: Isabella × Kaspar: Library Date →
Features
- Three Scenes, One Table — The entire 45 seconds stays in the same candlelit library corner: three 15-second beats that escalate from playful teasing to mutual exposure, and finally to hiding the evidence together as footsteps pass.
- Real Couple Chemistry — Isabella and Kaspar flirt by exposing each other's lies: “You've been staring at me for seven minutes,” “I'm studying your study method,” “That doesn't sound like an apology.”
- Photorealistic Handheld Vlog Look — Shot like an intimate phone vlog with live actors: natural skin texture, real candlelight, gentle handheld shake and natural exposure — no anime, no CGI, no poster look.
- Audio-Rich Soundscape — Real English dialogue between the two actors, page turns, quill scratches, low student whispers and candle ambience are all baked into the mix.
- Burned-In Chinese Subtitles — Every line is baked into the video with clean, readable subtitles, so the story works on any device — even with the sound off.
- Instant Play in the Browser — Autoplay, loop, controls and subtitles are packaged into one public page: no install, no download, plays on any screen.
Interface
UI
0:21 — Isabella slides her ringed hand over Kaspar's parchment: “This isn't History of Magic homework.” He pushes a second folded note back with two fingers: “And you didn't come here for a book.”
Sprite
伊莎贝拉·维加 (Isabella Vega) — Slytherin transfer student from an American wizarding family: long dark hair, sharp dark-brown eyes, silver serpent hair clip. Transparent PNG cut with BiRefNet from the world's character cover art.
Sprite
卡斯帕·罗森 (Kaspar Rosen) — Ravenclaw upperclassman with chestnut curls, grey-green eyes and an expensive robe worn loosely. Transparent PNG cut with BiRefNet.
Background
The world's own “Scene background — library” render: the Restricted Section at night — tall shelves reaching into shadow, a single candle, dusty magical atmosphere. The exact corner where the date happens.
Production Process Breakdown
Stage 1: World & App Conceptclaude-opus-5
AI builds the Harrypotter world from the IP seed — Hogwarts, the Ministry, the old pure-blood families and the war against Voldemort. The world brief locks the classic fantasy illustration / vintage storybook visual style, and the “library date, but nobody is studying” premise becomes the 45s couple life-slice.
AI builds the Harrypotter world from the IP seed — Hogwarts, the Ministry, the old pure-blood families and the war against Voldemort. The world brief locks the classic fantasy illustration / vintage storybook visual style, and the “library date, but nobody is studying” premise becomes the 45s couple life-slice.
Stage 2: Video & Art Assetsseedance-2.0birefnet
All three 15-second segments are generated with Seedance 2.0 from a shared duo reference image that locks both character identities — photorealistic live-action vlog style with natural English dialogue and audio — then concatenated into a single 45.3s vertical video with subtitles. Character cover art is cut into transparent PNG sprites with BiRefNet.
All three 15-second segments are generated with Seedance 2.0 from a shared duo reference image that locks both character identities — photorealistic live-action vlog style with natural English dialogue and audio — then concatenated into a single 45.3s vertical video with subtitles. Character cover art is cut into transparent PNG sprites with BiRefNet.
Stage 3: Build & Publishdeepseek-chat
The final video, subtitle track and player page are packaged into a responsive browser experience and published instantly to a single public link — autoplay, loop and controls included.
The final video, subtitle track and player page are packaged into a responsive browser experience and published instantly to a single public link — autoplay, loop and controls included.
Asset Prompts
Real Generation Prompts
Shared Reference Rules Promptseedance-2.0
"9:16 vertical 15-second PHOTOREALISTIC live-action video with natural audio, realistic human actors, handheld phone camera / intimate vlog style, grounded magical boarding school life-slice. Looks like real young adult actors playing high-year wizard students inside an old British magical school library. Natural skin texture, real hair strands, realistic eye reflections, realistic robe fabric, warm candlelight, slight handheld shake, natural exposure. Absolutely no anime, no illustration, no painterly style, no CGI, no cartoon, no fantasy poster look, no subtitles, no captions, no watermark, no modern UI. REFERENCE IMAGE RULE: use the provided duo reference image ONLY to preserve the two character identities. Do NOT use it as the first frame. Do NOT copy the reference poses, composition, lighting, or background. Translate both designs into realistic live-action people. Character visual lock, exactly TWO main characters only, no duplicate people, no extra romantic partner: Isabella Vega: young woman, deep dark long hair, sharp dark brown eyes, polished makeup, bold confident beauty, strong styling sense, green-and-silver school robe with personal accessories like earrings, hair clip, rings, and a slightly shortened tie. She is glamorous, socially dominant, witty, sharp, and protective of her dignity. Kaspar Rosen: young man, deep chestnut slightly curly hair, grey-green eyes, slender elegant face, relaxed beautiful expression, expensive but loosely worn blue-and-silver school robe. He is gentle, lazy-looking, charming, and quietly calculating. Location lock: the entire segment is already inside the SAME library corner by a tall window. No entering, no door opening, no new room, no outdoor scene, no corridor cutaway. The same long wooden table remains the spatial anchor. On the table: two piles of old books, parchment notes, ink bottle, quill, Isabella's rings, Kaspar's wand, candlelight. Camera may cut between close table angles and restrained handheld reactions, but must not leave the library corner. Relationship tone: they are a couple, but not sugary. Their daily romance feels like teasing, mutual suspicion, secret-sharing, and quiet protection. They flirt by exposing each other's lies. Keep it school-life intimate, not sexual, not melodramatic. AUDIO REQUIRED: include natural live dialogue in English, room tone, page turns, quill scratching, low student whispers, candle ambience, soft fabric movement. Dialogue should sound like real actors in the room, not clean studio narration. Do not make it silent."
"9:16 vertical 15-second PHOTOREALISTIC live-action video with natural audio, realistic human actors, handheld phone camera / intimate vlog style, grounded magical boarding school life-slice. Looks like real young adult actors playing high-year wizard students inside an old British magical school library. Natural skin texture, real hair strands, realistic eye reflections, realistic robe fabric, warm candlelight, slight handheld shake, natural exposure. Absolutely no anime, no illustration, no painterly style, no CGI, no cartoon, no fantasy poster look, no subtitles, no captions, no watermark, no modern UI. REFERENCE IMAGE RULE: use the provided duo reference image ONLY to preserve the two character identities. Do NOT use it as the first frame. Do NOT copy the reference poses, composition, lighting, or background. Translate both designs into realistic live-action people. Character visual lock, exactly TWO main characters only, no duplicate people, no extra romantic partner: Isabella Vega: young woman, deep dark long hair, sharp dark brown eyes, polished makeup, bold confident beauty, strong styling sense, green-and-silver school robe with personal accessories like earrings, hair clip, rings, and a slightly shortened tie. She is glamorous, socially dominant, witty, sharp, and protective of her dignity. Kaspar Rosen: young man, deep chestnut slightly curly hair, grey-green eyes, slender elegant face, relaxed beautiful expression, expensive but loosely worn blue-and-silver school robe. He is gentle, lazy-looking, charming, and quietly calculating. Location lock: the entire segment is already inside the SAME library corner by a tall window. No entering, no door opening, no new room, no outdoor scene, no corridor cutaway. The same long wooden table remains the spatial anchor. On the table: two piles of old books, parchment notes, ink bottle, quill, Isabella's rings, Kaspar's wand, candlelight. Camera may cut between close table angles and restrained handheld reactions, but must not leave the library corner. Relationship tone: they are a couple, but not sugary. Their daily romance feels like teasing, mutual suspicion, secret-sharing, and quiet protection. They flirt by exposing each other's lies. Keep it school-life intimate, not sexual, not melodramatic. AUDIO REQUIRED: include natural live dialogue in English, room tone, page turns, quill scratching, low student whispers, candle ambience, soft fabric movement. Dialogue should sound like real actors in the room, not clean studio narration. Do not make it silent."
Segment 1 Prompt — 0–15sseedance-2.0
"Segment 1 of 3, 0-15s of a 45s story. Establishing their library study date. Use the shared rules exactly. 0-3s: Medium handheld shot across the same wooden table. Isabella sits on one side, pretending to read; Kaspar sits opposite, pretending to write. Candlelight and tall library window behind them. Isabella's ring taps the page slowly. Isabella says, amused and sharp: "You've been staring at me for seven minutes." 3-7s: Cut closer to Kaspar. He twirls a quill between his fingers, relaxed smile, blue-and-silver robe loose at the collar. He glances from her eyes to her notes. Kaspar says softly: "I'm studying your study method." 7-11s: Cut to Isabella's close reaction. She closes her book halfway, dark eyes sharp, tiny smirk. Her jewelry catches warm light. Isabella says: "My study method is catching people lying." 11-15s: Cut to both of them at the same table. Kaspar leans back slightly, still smiling; Isabella does not blink. The tension is playful but dangerous. Kaspar says: "Then you're making excellent progress today." End with Isabella's ring tapping once on the table."
"Segment 1 of 3, 0-15s of a 45s story. Establishing their library study date. Use the shared rules exactly. 0-3s: Medium handheld shot across the same wooden table. Isabella sits on one side, pretending to read; Kaspar sits opposite, pretending to write. Candlelight and tall library window behind them. Isabella's ring taps the page slowly. Isabella says, amused and sharp: "You've been staring at me for seven minutes." 3-7s: Cut closer to Kaspar. He twirls a quill between his fingers, relaxed smile, blue-and-silver robe loose at the collar. He glances from her eyes to her notes. Kaspar says softly: "I'm studying your study method." 7-11s: Cut to Isabella's close reaction. She closes her book halfway, dark eyes sharp, tiny smirk. Her jewelry catches warm light. Isabella says: "My study method is catching people lying." 11-15s: Cut to both of them at the same table. Kaspar leans back slightly, still smiling; Isabella does not blink. The tension is playful but dangerous. Kaspar says: "Then you're making excellent progress today." End with Isabella's ring tapping once on the table."
Segment 2 Prompt — 15–30sseedance-2.0
"Segment 2 of 3, 15-30s of a 45s story. The flirtation escalates into mutual exposure. Use the shared rules exactly. 0-3s: Close table shot. Isabella's hand with rings slides over and pins the corner of Kaspar's parchment note. Same library table, same candle, same books. Kaspar does not pull it away. Isabella says: "This isn't History of Magic homework." 3-6s: Cut to Kaspar's face, calm and amused. He slowly pushes a second folded parchment toward her with two fingers. Kaspar says: "And you didn't come here for a book." 6-10s: Cut to Isabella opening the folded parchment. She sees a name or marked line, but the writing is not readable to the viewer. Her expression turns from smug to genuinely interested. Isabella says: "Were you following me?" 10-13s: Cut to Kaspar, gentle voice, dangerous honesty. He looks at her like he is enjoying being caught. Kaspar says: "No. People just confess things near you." 13-15s: Cut to Isabella's face, a slow smile. She leans closer over the table, not angry, more intrigued. Isabella says: "That doesn't sound like an apology." Kaspar answers quietly at the end: "I wasn't aiming for one.""
"Segment 2 of 3, 15-30s of a 45s story. The flirtation escalates into mutual exposure. Use the shared rules exactly. 0-3s: Close table shot. Isabella's hand with rings slides over and pins the corner of Kaspar's parchment note. Same library table, same candle, same books. Kaspar does not pull it away. Isabella says: "This isn't History of Magic homework." 3-6s: Cut to Kaspar's face, calm and amused. He slowly pushes a second folded parchment toward her with two fingers. Kaspar says: "And you didn't come here for a book." 6-10s: Cut to Isabella opening the folded parchment. She sees a name or marked line, but the writing is not readable to the viewer. Her expression turns from smug to genuinely interested. Isabella says: "Were you following me?" 10-13s: Cut to Kaspar, gentle voice, dangerous honesty. He looks at her like he is enjoying being caught. Kaspar says: "No. People just confess things near you." 13-15s: Cut to Isabella's face, a slow smile. She leans closer over the table, not angry, more intrigued. Isabella says: "That doesn't sound like an apology." Kaspar answers quietly at the end: "I wasn't aiming for one.""
Segment 3 Prompt — 30–45sseedance-2.0
"Segment 3 of 3, 30-45s of a 45s story. They realize they are investigating the same secret, then hide evidence together like a couple. Use the shared rules exactly. 0-4s: Close shot of both their parchment notes placed side by side on the same wooden table. Isabella's green-and-silver sleeve and Kaspar's blue-and-silver sleeve frame the papers. Candlelight flickers. They both realize the information matches. Isabella says, lower and more serious: "So we're investigating the same person." 4-7s: Cut to Kaspar's close reaction. He looks pleased and a little too soft. He gently slides his note under hers. Kaspar says: "Disturbingly romantic." 7-11s: Cut to Isabella. She rolls her eyes but smiles despite herself, then tucks a loose strand of dark hair behind her ear. Isabella says: "Normal couples go to Hogsmeade, you know." Kaspar, off-camera, says: "We can. After we find out who's lying." 11-13s: Footsteps approach somewhere in the library. Both instantly go still. Isabella slips both parchments into a book; Kaspar casually pushes the book toward her like he is passing a love note. Isabella whispers: "You're insufferable." Kaspar whispers: "And yet you hid the evidence in my book." 13-15s: Final intimate table-level shot. They both lower their eyes to pretend to read as the footsteps pass. Under the table edge, Isabella's fingers briefly touch Kaspar's hand. He gently hooks one finger around hers for one second, then lets go. Kaspar whispers: "Same time tomorrow?" Isabella whispers without looking up: "Depends how useful you are.""
"Segment 3 of 3, 30-45s of a 45s story. They realize they are investigating the same secret, then hide evidence together like a couple. Use the shared rules exactly. 0-4s: Close shot of both their parchment notes placed side by side on the same wooden table. Isabella's green-and-silver sleeve and Kaspar's blue-and-silver sleeve frame the papers. Candlelight flickers. They both realize the information matches. Isabella says, lower and more serious: "So we're investigating the same person." 4-7s: Cut to Kaspar's close reaction. He looks pleased and a little too soft. He gently slides his note under hers. Kaspar says: "Disturbingly romantic." 7-11s: Cut to Isabella. She rolls her eyes but smiles despite herself, then tucks a loose strand of dark hair behind her ear. Isabella says: "Normal couples go to Hogsmeade, you know." Kaspar, off-camera, says: "We can. After we find out who's lying." 11-13s: Footsteps approach somewhere in the library. Both instantly go still. Isabella slips both parchments into a book; Kaspar casually pushes the book toward her like he is passing a love note. Isabella whispers: "You're insufferable." Kaspar whispers: "And yet you hid the evidence in my book." 13-15s: Final intimate table-level shot. They both lower their eyes to pretend to read as the footsteps pass. Under the table edge, Isabella's fingers briefly touch Kaspar's hand. He gently hooks one finger around hers for one second, then lets go. Kaspar whispers: "Same time tomorrow?" Isabella whispers without looking up: "Depends how useful you are.""
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