Simply put, this anime is 'surprisingly' well made. It's not plot twist, but a great turn of events and character development.
I finished watching this and I can say that this anime is worth watching, 10/10
It caught me by surprise by reading the synopsis. I thought it's kinda like Karakai Jouzo no Takagi-san, Uzaki-chan wa asobitai, or other fun and chill anime.
It is fun. Then, there's drama, romance, and a mix of everything along with its childish animation. When I checked the genre, it has "romance", and "seinen". So now it all makes sense :)
I recommend to watch this. I got immersed in the anime that I now feel a little lost after the anime ending. There's a lot of FEELS and EXCITEMENT. FUN AND INFORMATION. There's a lot to say but I'll keep this short cause I'm a lazy typer. This is a good one and it'd be a shame if you are not able to watch this.