``Ichika'' is a female student who grew up in a complicated home environment. - She had been sexually assaulted on a daily basis by her mother's remarried partner, and before she knew it, she could no longer trust adults. - Whether he knows about her background or not, her homeroom teacher Oshima sees Ichika standing alone in the park at night and invites her to his home, crying, saying, ``I don't want to go home.'' - Her state of mind, which she thought was ``I hate adults,'' gradually changes...and the two of them end up crossing a line that they shouldn't cross.