It's Ren's first summer vacation in Japan. The landlord of the apartment he and Haru once lived in hires him to clean one of his apartment units. Haru becomes unbearably curious when Ren refuses to tell him why he got a part time job. Kiyoka suspects Kiri, Ren's female classmate who has been coming over with her dog to hang out, but...? And while this is happening, an unknown man suddenly approaches Ren--?!
Shut up, you tsundere brother-lover!
Halt doch die Klappe,
du mit deinem Bruderkomplex!
¡Cállate, tsundere con hermanitis!
¡Cállate, tsundere con hermanitis!
Ferme-la, le pique-assiette !
Ma taci, brutto tsundere
con la fissa dei fratelli!
Cala essa boca, seu amante 
 de irmãos tsundere!