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?!
Did you eat something off the ground
and upset your stomach?
هل أكلت شيئًا ما مِن على
الأرض وأزعجتِ معدتك؟
Hast du was vom Boden gegessen
und dir den Magen verdorben?
¿Has comido algo raro
y te duele el estómago?
Tu as mangé un truc
qui n’est pas passé ?
Avete mangiato qualcosa 
di avariato e vi fa male la pancia?
Você comeu algo do chão
e fez mal ao estômago?
Ела с пола и живот разболелся?