12-year-old Oriko Seki, who lost her parents in a car accident, ended up living in her grandmother's Onsen Ryokan "Haru no Ya." With the ghost "Uribou" cohabitating with her and all the other odds, she ended up training to be a young female innkeeper. At first, she didn't like the training, but gradually felt her admiration for her title and began to train seriously. Thus, the growth of the young warrior Oriko begins. (Source: MAL News)

Junta's great granddaughter goes back in time in order to make Junta stay as the Mega-Playboy so she can continue to exist. Along with her comes an old man with the intention of making Junta stay as the Mega-Playboy forever for his own purposes.When Junta starts getting attacked, he has no choice but to return to being the Mega-Playboy in order to protect his loved ones.

Mechadock is a powerful race car obtained from a simple economy car, which is able to race on any ground.

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