So I can not not give this a very high score because there was barely any romance besides people have a crush on someone else. So simply because of that I have to take off points. Also the ages of the characters just makes it even harder to even really enjoy any romance that does exist(games that focus on young minors tend to have very little romance), but doesn't really matter. However, the story was well written. This probably would do better as being listed as a mystery story than a yaoi or bl game(it's listed as such in the VNDB), since the focus on the game is very much the story and mystery. Like I thought I wouldn't be able to figure everything else, but I couldn't figure anything else until the game explained. That alone is amazing.
The music was great, it seems they did a lot of their own music in some cases, that's what I think since a couple of the songs I don't recognize anywhere else. The music really made scenes so much more impactful and emotional. The game overall combined with art, music and graphics were well choreographed to help provide to emotional aspects of the story.
You have to changed your computer to Japanese local, and I don't mean just the simple time and location, you actually need to change "system locale" look up on google how to do that if not sure how. It is usually an administrator option, so if you aren't being asked for permission to change locale then you probably aren't changing the right thing. YOU CAN NOT PLAY THE GAME IF YOU DON'T CHANGE THE SYSTEM LOCALE. I repeat this because I notice lots of people complained about not being able to play the game, but their issue is they didn't know how to properly change the system locale.
There are some extremely heavy trigger warnings here, rape, suicide, overall mental trauma/illnesses. Do not play this game if you feel any of these topics will trigger you. They do not hold back in this game even though looks so cute. I almost never cry in all the tons of stories I read, but there are a few where I have, I didn't cry here, but I almost wanted to at some parts. So this game "almost" making me cry means that they get heavy, since I'm not easy to cry at all.
I'm not going to say much else because this game is free, so you need to experience the story yourself. However, just know it's a very complicated to play game. It's one of those type of visual novels that actually care about the "game" aspect. If you are more into just reading the story, there is a straightforward walk through in the forums for the game on itch.io, but if you want to try figuring it out yourself then have fun, because it's not easy.