Sui mo Yamai mo

Yuki was taught from childhood to defend those in need, but her efforts lead to trouble when she confronts a customer at work, believing them to be a vulnerable woman. It turns out to be Sousuke, a frail and often ill man whose lifestyle is limited by his health. Despite his physical condition, Sousuke maintains an upbeat attitude. Yuki becomes curious about him and is surprised when she is assigned to be his bodyguard. As a result, they begin living together under the same roof.