Boshi Soukan Danchi: 101 Goushitsu Kangofu Mama

A young nurse named Yumi lives with her son in a small apartment complex. She works long hours at the hospital, leaving her teenage son alone for most of the day. The two share a close but strained relationship, with unspoken tensions simmering beneath the surface.

As Yumi's son grows older, his feelings toward her become more complicated, blurring the lines between familial affection and forbidden desire. Their isolated life in the apartment building becomes the stage for a series of increasingly intimate encounters that challenge the boundaries of their relationship.