Koitarou Samejima is a professional rikishi who, despite his love for sumo, has struggled with his small stature all through his career. Now, he is thinking about retiring, and he has 15 days to make the most out of it! (Source: Tokyo Otaku Mode)

Samejima, Saigo no Juugonichi was left unfinished after author Takahiro Satou died at the age of 41.