This work depicts a forbidden relationship with a beautiful older sister. Presented from a subjective perspective, it fully showcases the charm of Akari Tsumugi. The story, in which the protagonist succumbs to the seductive older sister's tempting allure, is thrilling. However, the more reserved nature of the other characters and the overall pale color tone are some unfortunate aspects. Nonetheless, it can be said that this is a recommended work for Tsumugi fans.