Warning: Long review.
I really enjoyed this game! It's really cool to see the dev jump to a much bigger project than their first one, I even bought the extra content pack with the manga and extra scenes (mostly for Chihaya, my hot scumbag). Very polished and nice art (the Chihaya over MC's shoulder one has me in a chokehold plz help). But I can't for the life of me figure out how to exceed 88% completion for both types of endings even though I think I got 1-7 on each. Sadly, I'll have to wait until someone figures it out for me.
The only flaw is the length of the game itself being too short imo. Or maybe that's just me being too big of a fan and wanting more lol, but I feel the stories of Kei and Chihaya deserved more time to shine and Inori could barely make an appearance.
(Sugary Route) Kei's story is so sweet and filled with a lot of "I love you"s, I'm sure many will like that, but I was having the most fun seeing his dark/controlling side and wish there was more of that to balance the mood of the story. I understand that the dev wanted to explore two contrasting extremes, but I feel a true balance would have been better narratively. The contrast will still exist with how the oppositely relationships appear on the surface compared to how it is deep down.
(Nougat Route) As for Chihaya, the gap between the last choice and the start of the best ending feels so stark, it was like their relationship took a total 180 and I didn't see how it changed so much instantly. In the route itself, like the opposite of Kei, I wish we saw more of the sweeter side of how much he actually loves the MC but is too broken to show it properly. For balance! Since I need some sweetness or else the bitter abusive parts are hard to enjoy. It took some interpretation on my own end to justify how they got there and even that was with the help of the content outside the route.
ALSO for Chihaya, I need warn my fellow english speaking players who have a clear expectation of what a stereotypical "yandere" bf is like, Chihaya is NOT that (Kei is). He doesn't eliminate any love rivals, and he doesn't get mad at other men so much as he lashes out on the MC herself. It's just a abusive relationship. But hey, he's hot af and I was still invested ^^;
SPOILERS for those who don't understand how Chihaya's best ending happened and want to hear an explanation: The character intro says that he's controlling bc he's self-conscious and he spent the entire game wondering why the MC doesn't break up with him. So when she ran away but comes back, it proved to him that no matter how undeserving of her he acts/feels, she really does belong to him and he is able to be happier in the relationship knowing that their bond is secure. The MC is overly dependent on a bad man, but that dependency makes him treat her better when it was severe enough. Overall a bad relationship, had really rough times, but came out a bit healthier in practice even though at its core it's two broken co-dependent people who 'love' each other very much.