Finally the train arrive from the station with the remaining crew and they head back.
But Keita ends up accompanying them, so they devise a way to hide their real purpose for going to Akihabara.
Keita simply uses the time to thank Miharu, but after a slip up, they end up in a compromising position, leading Ako and Riko to assume the worst.
Miharu is with Keita and they go first.
Unfortunately they end up getting locked in the gym storage room and their hashed escape plan leads to Miharu relieving herself on Keita's back.
Description: There were less of the sisters though in this.