단일 흑백 만화 페이지

One page of a black-and-white manga featuring the two characters from the reference photo. Clean black linework on a plain white background. Manga panel layout progressing from top-right to bottom-left. Story theme: [An older sister who absolutely cannot remember something important, and her younger sister who cannot guess what it is]. Authentic traditional Japanese manga style with screentone textures and expressive dialogue panels.