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 don't know how much longer 
we can keep going in this heat.
Keine Ahnung, wie lange es so heiß bleibt …
No sé cuánto podremos
seguir con este calor.
No sé cuánto podremos
seguir con este calor.
Il fait si chaud et on ignore
quand on aura fini !
Con questo caldo non so quanto a lungo
potremo continuare ad andare avanti!
Não sei por quanto tempo 
 conseguiremos continuar nesse calor.