The reality of polygamy and, more realistically, having an attractive partner. Kohaku suffers not from Ryuu being popular, but mostly from her own insecurity. She's not only one of his later lovers, but also having the least confidence amongst the 3. Madoka is beautiful and capable, Yuzu is also beautiful and capable, but more importantly she has a child. Yuzu wants a child and want to share more things with Ryuu because of her own feeling about her inferiority. Not to forget, she also married him to pay off her family's debt. While Ryuu, being a typical men, cares little about that, Kohaku's insecurity only grows as the series goes on because Ryuu inability to sympathise with her struggle. I don't think the series has anything good to say about men nor women, and is rather harsh in my opinion. Men are either free spirits who cares little about others, other than themselves like the guy who tried to court Kohaku, Ryuu and Yuzu's lover. The women, on the other hand, are slave to being a dreamer and practicality at the same time. All 3 wives are terrible people in their own way. Kohaku married Ryuu to solve her family's debt, which seems chivalrous, is nothing more than selfishly barging into onto other's household for financial gain, especially to Madoka. Yet, Kohaku, despite all of that, still want to feel important to the attractive men with 2 other wives that he have to please. Madoka's only saviour is Ryuu, but despite her own pride about her past and her condition, she still dreams to be Ryuu's number one. Yuzu only marries Ryuu to settle down from her messy previous relationship, yet she was still dreaming about maintaining connection with her former lover, despite marrying another men. I don't think any of them are portrayed rather positively, perhaps only sympathetically, which is sorely missing in girl's comic in general. Even if Ryuu feels a little too fantastical, I still love that Non sticks to her gun and portrays him rather negatively as the series progresses. Most readers probably hates this kind of characters, but I think it provides varieties. Idealistic relationships and characters, to me, are boring. I don't want to read about someone's fantasy, I'm more interested in their perspective. There are tons more fantasy and self-insertion works out there, you won't have trouble finding one that pleases your taste of idealistic life.