Nayuta's sister invites Tokonatsu, RDeco, and Freak! to entertain the guests at the hot-spring inn she manages, but they turn out to be a tough crowd.
You've got nothing to lose bathing (sploosh)
in a gush of serotonin (nothing)
No tienes nada
que perder bañándote (splash)
Você não tem nada a perder
Se banhando