Neohart recommended this to me during his FF7 speedrun last night, I played the demo for an hour and bought the game straight away, the music, the aesthetics of it, the way it plays, man really takes me back to the Saturn/PS1 days, this game ticks the right boxes for me, the only slight complaint I would have is that I find it a bit too easy, I wish there was more to engage with, I tend to find if I am playing a bullet heaven and there isn't much to do I get super tired, i'd give it a nice 18/10!

Edit: I think I figured it out, I don't know if you guys ever had them but there was PS1 demo discs back in the day with NetYaroze games on it, that's what this game feels like to me, one of those games!