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?!
Ah, I see.
.هكذا إذًا
Oh … Das erklärt’s.
Ah, ya veo. Con razón tienen dinero.
Ay, ya veo.
Ah, je comprends mieux.
Elle doit bien gagner sa vie.
Eh, già.
Ah, entendi.
А... Всё понятно.