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Seedance 2.5

A silver-haired anime heroine sprints across the roof of a silver train through a red canyon at sunset, fighting with swords

Prompt

High-quality animated影片. A silver train speeds through a red canyon at dusk. From 0.0 seconds, the protagonist is already sprinting full speed across the roof; do not add an introductory still image or ready stance. All motion is in real time. Fast footwork, weight shifts, weapon contact, recoil, and the next movement must connect without interruption.

【Reference and character lock】
material:129768 is the face/identity reference and the standard for the face and character identity. The same person must appear in every Cut, with the same narrow chin, blue eye shape and iris color, long moonlight-silver hair, bangs, blue-rose-and-butterfly hair ornament, and fixed placement.
material:129769 is the outfit/full-body reference. Lock the black high-neck top, black lace sleeves, deep-navy short cape, blue-gem brooch, fine gold and silver decoration, navy pleated midi skirt, black lace-up boots, moon-pattern bag, and slim silhouette. The bag stays tight against the right hip.
If references conflict, priority: use material:129768 for face, eyes, and hair; use material:129769 for clothing, decoration, and body shape below the neck. The final expression change follows: eyes soften → brows lower slightly → eyelids narrow once → mouth stays closed → gaze returns forward. Allow only changes in expression, gaze, breathing, combat posture, and natural hair and fabric motion. No identity change, face averaging, outfit swap, left-right mirroring, duplicates, or added protagonist.

【Equipment lock】
owner / ownership count: only the protagonist owns one blue-silver slim single-edged sword (one sword), and only the skeleton king owns one black-iron greatsword (one greatsword). Keep the total number of swords in the video fixed at two. One dark-navy scabbard is belt-fastened at the protagonist’s left hip. At the opening, the sword is already drawn in the right hand, the scabbard is empty, and the left hand is free.
The single-edged sword and greatsword each remain one connected single structure: blade, guard, and hilt stay joined and keep the same length. The protagonist grips the hilt with the right hand; the king grips his with both hands. During rotation and parrying, move the entire weapon as one unit, not only the tip. No weapon, hilt, guard, or scabbard multiplication, and no owner exchange.

【Enemy lock】
Exactly three regular skeletons. As skeleton / undead, they have skulls, exposed ribs, spines, pelvises, long finger bones, blue eye-socket light, and torn black cloth. They carry no weapons and all three lunge simultaneously from different heights.
Exactly one skeleton king. As skeleton / undead, he has a skull and ribs twice as large, a black-iron crown fixed to the skull, heavy black-iron armor, a torn deep-navy cloak (armor, cloak), intense blue eye-socket fire, and a black-iron greatsword. No shield. He appears only after the three regular soldiers have fallen.
All enemies retain solid bone, cloth, and iron materials until the fight is resolved; do not replace them with crystal bodies or luminous humanoids. Do not mix regular-soldier and king traits or duplicate enemies.

【Rendering lock】
Use only 3D toon/cel-look. Based on material:129768 and material:129769, use thin blue-gray outlines, two- or three-layer toon shading with soft gradients, clear moonlight silver, deep navy, and royal blue, sharp fine highlights in the silver hair, and dense material rendering that distinguishes velvet, lace, metal, gems, and glass.
Character-first palette / character-specific palette: prioritize the protagonist’s royal blue as character-specific key light and deep navy as character-specific shadow. Use a low-saturation background; cyan only as auxiliary, only for contact light. Render exterior ribs, window frames, seats, straps, handrails, connecting doors, and floor reflections with high density.
Do not use thick outlines, flat single-layer cel shading, generic 3D anime faces, smooth plastic CG materials, low-density backgrounds, live-action or semi-live-action rendering, dull colors, or mixed visual styles.

【Shared motion and camera axis】
The fight is one continuous trajectory. Pass the same motion line through roof sprint, fall toward the window, low evasion beneath three bone arms, passage through the center of the encirclement, one continuous sword arc, the trajectory bent outward by the king’s greatsword, inward rotation, front-back position exchange, horizontal return, diagonal-up finish, and sheathing. Contact deforms the trajectory; never stop to reset the stance.
Switch between low rear-three-quarter attacker tracking, diagonal exterior angle, front retreat, over-the-shoulder counter, short orbit / axis change, diagonal impact push-in, and side medium close-up as needed. low angle height: 0.4m for roof and floor movement, 1.2m over the shoulder, 1.35m while sheathing.
Briefly allow foreground occlusion from seats, window frames, bone arms, and blades; during speed, parts of the body may leave the frame. The background vanishing axis always flows toward the front of the train. Connect cuts through foot contact, passing bone arms, sword sweeps, weapon contact, and body movement direction.

【Speed, timing, and sound】
All body motion is in real time. Hit-stop at contact is at most 1 frame. From the start of each Cut, move the support foot, pelvis, ribcage, and weapon; pass the stated intermediate times in order and reach the specified state by the end time. Do not use an interval for a single pre-contact pose or interpolation of the same sword crossing. Do not substitute speed with sparks, hair, or cloth alone; while they remain visible, the character, enemies, and both weapons must move to their next floor-relative positions.
Synchronize metal-roof footsteps, wind pressure, shattering glass, bone-arm wind shear, the dry sound of bones hitting the floor, short metal impacts between sword and greatsword, armor cracking, and the final sheathing sound with visible events. No dialogue, subtitles, logos, UI, or watermark.

Cut 1–2: Keep the exact stated timing and continuity: the protagonist takes four full-speed steps along the roof ribs, jumps from the right roof edge, approaches the window from outside, strikes the center of the outer glass surface with the complete sword at 2.7 seconds, opens radial cracks only after impact, passes head and right shoulder through at 3.1 seconds, then hips, knees, and boots, lands fully inside at 4.2 seconds, crosses two floor seams and runs two steps by 5.0 seconds.

Cut 3–6: Keep the exact stated timing, camera heights, 10cm clearances, and continuous trajectory: deflect the high, low, and chest-level bone arms, pass beneath and above them into the center, rotate through one continuous sword arc across the three skeletons, and leave their simultaneous collapse behind while running toward the connecting door.

Cut 7–11: At 10.3 seconds the door opens inward and the skeleton king enters. Preserve the complete greatsword and sword, both support legs, the approximately 10cm pre-contact gaps, the two brief impacts, maximum 1-frame hit-stops, the recoil passing through wrists, elbows, shoulders, ribcage, pelvis, and feet, and the uninterrupted exchange of front and rear positions. Convert the king’s tracking rotation into a horizontal return and then into the finishing trajectory.

Cut 12–14: At 18.7 seconds the sword passes diagonally upward across the front of the black-iron armor; only afterward do thin blue cracks appear. At 19.2 seconds the blue eye-socket fire disappears. The king collapses with the greatsword. The protagonist continues walking, supports the scabbard with the left hand, aligns the sword tip with the real scabbard mouth, inserts the blade in real time, and completes sheathing at 29.7 seconds with the dry metallic sound «KACHIN». At 30.0 seconds cut immediately before the right hand leaves the hilt. Preserve all specified intermediate times, camera changes, occlusions, motion directions, contact distances, and no-text/no-UI conditions.
  • The prompt is in Chinese: paste it as is — the model understands it.
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Model
Seedance 2.5
Format
16/9
Author
@haruuraeadss
Original
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