Shimamura just happens to run into Adachi's mom at the gym and they have an awkward encounter. Later on, Shimamura invites Adachi to karaoke with Hino and Nagafuji.
So she's your little sister.
Dann seid ihr also Schwestern!
Así que es tu hermana menor.
así que tiene que ser tu hermana.
C’est ta petite sœur.
quindi è tua sorella minore.
Então ela é sua irmãzinha.
а она твоя младшая сестра!