This work depicts the forbidden love between siblings, where the sweet days of Umi and her brother are overshadowed by an impending misfortune. Shockingly, the disturbing development of rape tears their relationship apart, which is truly startling! However, while this premise is interesting, the character designs are disappointing. The roles of the brother and the senior are too similar, lacking distinct visual differences, which is a downside. Don't we need a more handsome brother? As a viewer, it's also difficult to empathize, and confusion takes precedence over excitement. If the characters had more individuality, this could be a fantastic work!