Responses
i dont think the friend stole hana from nao. considering that the friend would've felt guilty about it and not talk w/ ryuuta so casually after breaking the news.
riichi prob met hana on a patrol or something and was asked to not say anything to nao, he probably has a soft spot for nao and hana and women in general and thus didnt wanna hurt nao hurt knowing nao is still kinda hung up on her.
that is, in my opinion, what happened.
I don't like Nao's friend who stole his girlfriend at all. Idk why, I just don't like him. I'm kinda surprise about what I felt too. He just rubs me in a wrong way.