I really wanted to like this one. The kunai swinging is a really fun mechanic and it's done well. It's just that the rest of the game is not very interesting. The color palette is very simple which isn't a problem in and of itself, but combined with the fact that the environmental elements are also not all that varied means that most areas look pretty much the same.
Additionally, I found the enemies to be either trivial or obnoxious to deal with. You get knocked back every time you hit someone so you have to walk forward in between every hit (I know Hollow Knight did this too but it's much more dramatic in kunai) or you kill the enemy in one hit and there's no point. I got to the third or fourth area and didn't find any of the enemies to be engaging and the metroidvania style exploration to be boring.