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.
How am I supposed to know?
Keine Ahnung.
¿Yo cómo voy a saber?
¿Cómo voy a saberlo?
J’en sais rien, moi.
Come faccio a saperlo?
Como é que eu vou saber?
Я такого не знала.