In the series premiere, a young man becomes entranced by the striking green eyes of his older sister during an ordinary afternoon at home. Their shared living space gradually reveals layers of quiet affection and lingering glances that hint at deeper feelings. As everyday routines give way to moments of closeness, the episode establishes the tender yet complicated bond at the heart of their relationship. This first installment from Yuzuki N's manga gently introduces the emotional undercurrents that will define their story.