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--?!
I have no idea what he was doing 
inside that apartment by himself.
Frage mich, was er in der
Wohnung allein gemacht hat.
No sé que hacía
solo en ese departamento.
No sé qué hacía
solo en ese apartamento.
Je me demande 
ce qu’il faisait ici tout seul.
Di cosa facesse sempre solo
in questo appartamento, non ne ho proprio idea.
Não sei o que ele estava fazendo 
 naquele apartamento sozinho.