Musashi enters a TV special called the Hell Game Challenge, an obstacle-course race, and asks Mai to be his partner. Although she refuses at first because Emi is set to appear at the same time, Mai agrees after being teased by her family and Shou. The pressure is put on Musashi though, as he is not very athletic, but also due to the fact that the show is being run by his father's rival. Musashi trains very hard in preparation, and Koganei attempts to pull some strings so that the show's directors will help out his son in the game...