@Ironclad that's happens, no? He has an interest in Ozu. The over dude has nothing to do with it. Even if he developed smth about her.
@t28 Iwamura? No way. Despite he has said about cheating today he was just an mastermind and organizer if the mixer. And has not done any step toward anyone. Moreover he has said about his family. He was just "helping" his co-workers to find a mate. But in the same way he is more friendly to Ozu. The question is why he bring him up. Just to convince him that cheating is ok? Don't think so, they already had this conversation. May be he knows smth about Kaori that we don't (and we know quite a lot, her behavior in the flashback speaks for itself) and consider Hara to be more suitable opportunity to Kotaro?