That is literally it. I read through just about this whole thing because I had invested too much time to not know the answer, and it was only answered like 15 chapters before the end, so I just went ahead and finished it.
so for everyone who was like me and just wants to know why she trashed their garden for no reason as a kid, it's a completely bs and nonsensical reason. It's just because she was going to have to move the next day, and she was mad at mc for not running away from home with her. That's literally it.
Other than that, don't even bother with this unless you really like drama. Honestly, at no point was I happy reading this. It's not the worst thing ever by any means, but I just didn't like the girls and their mindsets. Everyone is talking about how much mc is a pathetic herbivore, but that's really nothing new, and he's not blowing other Japanese MC's out of the water or anything. The real issue is the two girls, especially satsuki (the blond). Yukari was mostly fine, just irritating by virtue of overwhelming insecurity, but seeing as satuski was the winner in the end, I wasn't happy because she was a petty bitch throughout the whole thing, doing annoying drama stuff like confessing when he's dating yukari, running away when he loves her, etc, not helped at all by the fact that MC is such a wishy washy guy. So even though they get their happy end, fuck them both.
A couple people mentioned ntr vibes, they're on crack, there's no ntr unless you consider MC's indecision and showing attention to multiple women to be ntr, which I guess it pretty much is, so ya then, it's ntr.
On the plus side, the little sister is extremely adorable and funny, and a lot of the side characters, like the glasses dude or that long sleeves girl, are actually pretty likeable, definitely moreso than the main cast.
I say 5, but that's me trying to correct for how much I don't like dramas. With how much I hate dramas and negative emotion (which is here in spades), my enjoyment was closer to a 3, but I think someone that likes dramas and isn't turned off by the mc being less than decisive/forward, would probably be a 6 or 7.