A single key frame from a modern premium 2D hand-drawn animated film, in the exact drawing style of the character sheets in the images: clean ink lines, flat colour masses, two-tone cel shading, warm painterly backgrounds. Wide 16:9 cinematic composition, characters exactly as on their sheets (same faces, hair, clothes, proportions). No text, no letters, no writing anywhere; any paper is blank or shows only a simple pencil doodle. Use image 1 for the two facing windows and the street. Use image 2 for Otto's exact look. Use image 3 for Lina's exact look. Same view across the street as the window shot. Otto leans far out of his left window, his long arm stretched forward, having just released a white paper plane that hangs in the air in the middle of the gap, heading toward Lina's window. Lina in the right window has her back half-turned, arranging her flowers, not noticing.
