For some reason, Kemeko came to Sanpeita's school as an intern teacher. Izumi, who secretly has feelings for Sanpeita, can't hide her turmoil when Kemeko chases after Sanpeita in the classroom, saying that it's to protect him from enemies all day long. A mysterious woman dressed in black appears in front of Sanpeita, who is swayed by Kemeko and Izumi's clash (?).