X Change 2

Takuya Aihara is an unlucky chemistry student at Miyanomori Private School with a tendency to get caught in bizarre accidents. A year ago, a strange chemical transformed him into a girl, leading to a series of strange experiences. Now, he is enjoying his school life with his girlfriend Asuka, but his peace is short-lived.

Chemistry club member Chisato uses Takuya as a guinea pig for a new experiment, which once again changes him into a girl. As he struggles to navigate his dual identity and the complications it brings to his relationship with Asuka, Takuya must deal with the consequences of this transformation.