Minayoshi Yuu is trying to help his mother Minayoshi Touko, who was once a national idol, recover from a strange "ailment." For her, he will do anything, even if it means finding a way to go back in time to erase the pain from her mother's past and bring her back to normal in the present.

A little boy who has an armpit fetish and a high school girl who loves male attention and exposing herself so much so that she doesn't care who it is. When she notices that he has stalked her to her basketball game, she decides it wouldn't be bad to indulge him more.

(Source: MangaDex)