Kanojo ga Flag wo Oraretara - 1x03 - Leave it to Me, There is a 99.9% Chance We're Going to Win This Athletic Meet- Followmy.tv

Souta wakes up in his room, only to find out Akane and Megumu is in his room, led by Okiku. Ruri is delivered to the Quest Dorm. The Quest Dorm is forced to enter Hatagaya Academy's Sport Festival and win the MVP in order to prevent the dorm from being demolished, as well as prevent Souta from being expelled. Rin is sent to help Quest Dorm in winning the MVP title, so she starts an extreme training routine. Despite the "hate guy" flag she possess, Rin once had a male friend named "Souda", whom she still exchange mails. It is revealed that "Souda" is actually Souta, and they were childhood friends.