Patchouli is the best Touhou Project character dont @ me

Pretty enjoyable game overall, and you might be more open to playing it if you're a fan of the EOSD cast. As others have mentioned its kind of a spoof on Vampire Survivors, though I prefer this game.
The spritework is pretty clean (Patchouli and Koakuma's chibi sprites are adorable), and there's a lot of fun to be had with the progression system as it allows you to slowly build up your stream up of bullets with simplistic patterns and buffs to spec into whatever playstyle fits you most.
It isn't a very difficult game, the basic fairies are easy to avoid and their projectiles are not too impressive, though every once in a while a miniboss will spawn in with more difficult (though not as in-depth as real Touhou spellcards) bullet patterns, which is where most of the challenge comes in.

I recommend it if you're looking for a casual roguelike/shmup that doesn't ask for much time investment from the player.