Based on the conversation on the show, the two of them have a sleepover at Chika's fancy house. Yumiko's happy to see Chika enjoy the dinner she cooked. Then for some reason, they end up taking a bath together. How did it come to this?!
Getting into the bath 
together was way worse.
التّواجد معًا في نفس حوض
.الاستحمام أسوأ بكثير
Noch unangenehmer ist es,
mit dir ein Bad nehmen zu müssen.
Bañarnos juntas es todavía peor.
Dit celle qui a voulu
qu’on se baigne ensemble.
È molto più indecente
voler entrare nella vasca insieme!
Acho muito pior entrarmos
na banheira juntas.
Ты залезла со мной в ванну,
и это я извращенка?