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?!
but I'll never catch up to that.
.لكنّي لن ألحق بك أبدًا
kann ich nicht mithalten,
egal wie sehr ich mich auch anstrenge.
nunca llegaré a su nivel.
per quanto ce la metta tutta,
non la potrò mai raggiungere...
não importa o quanto me esforce,
não vou alcançá-la.
Мне ни за что не подняться, 
как бы ни старалась!