Shuntarou’s younger sisters – Ayaka, Chiaki and Fuyuno – are very mean to him, so he wishes he had a gentle older sister. Then some mysterious game seems to make him younger.
Original title 性活週間 THE ANIMATION
TMDb Rating 7.26 5,296 votes
First air date Mar. 27, 2019
Last air date Jul. 25, 2019
Average Duration 30 minutes