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?!
What the hell?
ما هذا؟
Was ist hier los?
¿Qué rayos está pasando?
¿Qué narices?
C’est quoi, ce bazar ?
Ma che significa?
Que diabos?
Что происходит? 
Почему меня мацают за сиськи?