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?!
Can you believe it's our first
 in sixteen episodes?
أتصدّقون أنّ هذه أوّل ضيفة لنا
مع أنّنا قمنا بستّة عشر حلقة؟
In der 16. Episode haben wir
unseren ersten Gast.
¡Tras 16 episodios,
es nuestra primera invitada!
Es la primera vez en dieciséis
episodios, ¿os lo podéis creer?
Notre toute première
en seize enregistrements !
E in 16 puntate è la prima in assoluto!
Você acredita que é o nosso
primeiro em dezesseis episódios?
16 выпуск, и у нас уже гости!