After Sakura Mizukami shows up at the Kazama household to ask for a favor, Kenji Kazama and his sister Noe end up unwillingly participating in a footrace at the local shrine. Intent on winning the prize—spring water that only appears once per year—Sakura recruited the Kazama siblings to guarantee her victory. But when Sakura's clubmates, Chitose Karasuyama and Roka Shibasaki, enter the race as well, the girls' competitive energy is unleashed and the contest immediately develops into an all out battle where no victor is certain. What's more, Noe, fed up with Sakura's constant teasing, has no interest in helping her win, and the battle rages not only on the field, but between the divided team members.

An unaired episode bundled with the seventh Blu-ray volume of the Amanchu! anime series.

Bundled with the 9th volume of the original novel, it is the unaired 13th episode of the TV series.

Sakamichi Onoda is an otaku who just wants to find more people to join the recently disbanded anime club with him. However, when a couple cyclists spy his skill in riding the bulky mamachari bike he's had since youth, they attempt to convince him to join the bicycle racing club instead. An OVA bundled with the 29th volume of the comic book.