To Me, Now That I'm 20

Miharu, Aya, Mahoro, and Riko received an offer from a person called Masapi-. The four make it over to the studio once again, in order to record using motion capture. And just like that, a single email set their fate into motion. Also, Mahoro receives a message from her old grade school, saying that they have her time capsule. However, she seems completely uninterested in going...