別に良いんだけど、ふたり同じ歯ブラシだとたまに間違って使ってる気がするね
「ふぉうですね……あまり気にしてませんでした」

I don't really mind, but I think since our toothbrushes are the same, we probably use the wrong one sometimes.
"Woah... you knew I never really paid much attention to that."