An anime-style illustration of a slim, athletic Japanese high school girl with gradient gold-to-orange eyes and long silver hair, dressed in a Japanese high school uniform with the skirt length at knee height. She leans backward about 25 degrees, chest open, head tilted back so her chin lifts upward, arms slightly raised and spread outward at about 20–30 degrees, elbows relaxed and hands loosely open, expressing emotional release or dramatic emphasis. Her weight is on her heels, legs straight, torso arched mainly from the upper back and neck, looking at the viewer. The scene is set inside a high school classroom with a simple, minimalist, nostalgic atmosphere. The composition is a back view, focusing on her back and side buttocks facing the viewer, with clear focus on facial details. The style features soft rendering, clean noise, a flat drawing approach with gentle shading, and smooth lines. The mood is stylish, confident, slightly edgy, yet approachable, with vibrant, highly detailed, and aesthetic visuals.