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?!
I apologize.
.أعتذر
Tut mir leid. Ich dachte mir nur, dass deine
echt prächtig sind und konnte nicht anders.
Lo siento, es que son tan espléndidos
que no pude evitarlo.
Lo siento.
Je suis désolée.
Non posso farci nulla, è davvero 
notevole per cui l'ho guardato.
Desculpa.
Прости.