Tamaki who becomes a surrogate mother for the sake of her elder brother, Satoshi, who is gay by going through artificial insemination using his partner Keito's sperm with her egg and the siblings wanting to reveal the truth to their parents after her pregnancy passes the first trimester.
Mayu Hotta
Yoshihiko Hosoda
Kenta Izuka
Hajime Inoue
Sanae Miyata
