Retro 1980s Anime City Chase From First Frame

the prompt

Animate the provided first frame into a 15-second retro 1980s anime storytelling chase sequence in a 4:3 horizontal frame. Keep the same two characters, same outfits, same identities, same city street, same sunny daylight, same hand-drawn cel animation style, and same character roles throughout the entire video.
STYLE:
Retro 1980s Japanese anime, hand-drawn cel animation, 4:3 horizontal composition, hand-painted urban background, visible ink outlines, warm sunlight, soft film grain, slight analog color bleed, subtle frame-by-frame animation imperfections, expressive character acting, cinematic action storytelling. The animation should feel like a polished anime opening sequence or a short film chase scene.
STORY:
Riko, the purple-haired airborne girl, carries a mysterious glowing cassette tape and leaps across the city above the street. Kaito, the dark-haired young man in sunglasses, chases her from the ground below. At first it feels like a playful pursuit, but by the end it becomes clear that Riko is leading Kaito toward something important.
CHARACTER LOCK:
There are exactly two main characters for the entire video.
Kaito is always the ground-running pursuer. He is male, with dark styled hair, dark aviator sunglasses, charcoal blazer, white T-shirt, light-blue jeans, and white sneakers with blue accents. Kaito must remain on street level or near street level.
Riko is always the airborne leaping character. She is female, with purple hair, pink heart-shaped sunglasses, pastel athletic jacket, denim shorts, striped socks, and high-top sneakers. Riko always holds or interacts with the glowing cassette tape. Riko must remain above Kaito, leaping between awnings, signs, balconies, and wires.
Do not swap their roles, genders, outfits, hair, accessories, or positions. Kaito never becomes the flying character. Riko never becomes the ground runner.
TIMELINE:
0–1s:
Begin exactly from the first frame. Hold the action pose for a brief cinematic beat. Warm sunlight glows on the buildings, the cassette emits a small magical light, and the city street feels still for half a second.
1–3s:
Riko launches from the awning and glides across the upper-right area of the 4:3 frame, holding the glowing cassette. Kaito starts sprinting below from the lower-left area, leaning forward with determination. Camera tracks slightly forward from a low street angle.
3–5s:
Riko swings around a hanging shop sign and lands briefly on a balcony railing. Kaito runs beneath her, dodging a small street barrier and passing vending machines. Use dynamic anime speed lines lightly, but keep the background readable.
5–7s:
Cut to a medium close-up of Riko looking back over her shoulder with a playful smile. Her purple hair and pastel jacket flutter naturally. The cassette glows brighter in her hand. Kaito remains visible below in the background, still chasing.
7–9s:
Camera drops to street level beside Kaito. Show his shoes striking the pavement, blazer moving with his sprint, sunglasses reflecting the city signs. He looks upward at Riko, focused and slightly frustrated.
9–11s:
Wide 4:3 action composition. Riko leaps from a balcony to an overhead sign, moving diagonally across the upper part of the frame. Kaito cuts through the street below, matching her direction. Keep the distance between them clear.
11–13s:
Riko tosses the glowing cassette into the air during a graceful midair flip. The camera follows the cassette briefly in slow motion. The city signs, blue sky, telephone wires, and sunlight streak behind it in a nostalgic anime style. Kaito reaches upward from the street but cannot catch it.
13–14s:
Riko catches the cassette again and lands above the street. She turns serious for a moment and points toward the end of the road, revealing that she is guiding Kaito rather than simply escaping.
14–15s:
Final shot: the camera pulls back to show both characters moving toward a sunlit rooftop radio tower at the end of the street. Riko is above, holding the glowing cassette toward the light. Kaito arrives below and looks up in awe. End on a strong 4:3 anime storybook frame, suggesting the beginning of a larger adventure.
CAMERA:
Use cinematic anime camera language adapted to 4:3: low-angle street tracking shot, diagonal action staging, medium character close-ups, wide urban chase compositions, brief slow-motion cassette insert, final pullback hero shot. The 4:3 frame should feel like a classic anime TV frame, with strong vertical layering between street level and rooftops.
MOTION:
Riko’s movement is light, acrobatic, and airborne: leaping, gliding, swinging from signs, landing on rails, flipping once, then pointing forward. Kaito’s movement is grounded, athletic, and determined: sprinting, dodging obstacles, skidding, reaching upward, then stopping in awe. Clothing and hair should have natural secondary motion.
ENVIRONMENT:
Sunny Japanese city shopping street, 1980s anime mood, colorful signage, tall narrow buildings, vending machines, balconies, shop awnings, telephone poles, overhead wires, warm late-afternoon shadows, bright blue sky with soft clouds. No rain, no night, no cyberpunk darkness.
ENDING:
End with a clean final frame where the two-character relationship is readable: Riko above with the glowing cassette, Kaito below looking up, both facing toward the mysterious destination.