WHY DO YOU KISS HIM. But in all seriousness, Okuyasu doesn't know how to deal with this lady who flirts with him. He didn't know he was protecting her and he ended up being a good boy accidentally? So now he's a little freaked out about her since no girl has ever kissed him on the cheek and he feels that he can't handle this important milestone in his life.

Not that Madhuri isn't pretty but now that he perceives that someone thinks he's cute he has no clue what he's supposed to do.