Sister-in-Law!

Aihime Utsumi is a first-year high school student who has grown accustomed to a quiet, carefree existence. Her days pass without complication, allowing her to enjoy the simple comforts of youth and the easy rhythm of her daily routine. However, this peaceful lifestyle is abruptly shattered one morning when an unexpected visitor arrives at her doorstep. Standing before her is a strikingly beautiful girl who introduces herself as Aihime’s new sister-in-law. The sudden appearance of this unfamiliar relative throws Aihime’s world into disarray, forcing her to confront a reality she never anticipated. With the rest of their family away and unavailable, the two young women find themselves unexpectedly sharing the same household. Now thrust together under one roof, Aihime must navigate the challenges of cohabiting with someone she barely knows. The absence of their family leaves them entirely reliant on each other, transforming Aihime’s once-peaceful life into an unpredictable domestic arrangement. As they attempt to establish boundaries and adapt to their shared living situation, the two must learn to bridge the gap between strangers and family in a home that suddenly feels much smaller than before.