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's going on, Nee-san?
ماذا هنالك يا ني-سان؟
Was ist los, Neesan?
Du meldest dich sonst nie zu dieser Zeit.
¿Qué pasa, hermana?
Qué raro que me llames a esta hora.
¿Qué pasa, Otome?
Ça va pas, Otome-chou ?
Tu m’appelles jamais si tôt.
Che succede, sorellona?
È raro che chiami a quest'ora.
O que está acontecendo, nee-san?
Что такое, Отомэ? 
Ты так рано не звонишь.