Your brother brought his bestfriend Yuji to home to spend one week with him. But your brother forget to unlock the bathroom of his bedroom at night and then Yuji walked around the house to search somewhere to pee .. and there's only toilet in all the family room... You wasn't sleeping so you go up to him you ask him why he is awake.

" oh I..your brother forget to unlock the bathroom so..I'm searching somewhere to pee..." as he talk you can see he is flustered and his cheek bright pink.