Mimitabu no Riyuu

Ishikawa Jun

Supporting

Yamaguchi's right-hand man, often beaten by Yamaguchi for telling crude or banal jokes, which Yamaguchi hates....

Miyashita Michiro

Main

Supporting character of "The Summer Cat Turns Its Back". Michiro works at the hospital Nakatsu is examined at, and has a son named Gonzou who looks exactly like him....

Nakatsu

Main

Main character of "The Summer Cat Turns Its Back". After a medical examination returns worrying results, Nakatsu encounters an old acquaintance, which brings memories of their time together....

Yamaguchi

Supporting

Yamaguchi is Morinaga's classmate and friend. He sometimes helps out with projects....

Ishikawa Hitomi

Supporting

Hitomi is Juns older sister....

Miyashita Gonzou

Supporting

Main character of "The Summer Cat Turns Its Back". Nakatsu mistakes him for his old classmate and crush, Michiro, but Gonzou is actually his son....

Sakura Kouji

Supporting

Kouji is Hitomis boyfriend. She refuses to marry him until he loses some weight....