The game is definitely extremely heavily inspired from Touhou -- same control, more or less same mechanics esp. with the newer games, etc. Some bullet patterns I definitely recognize XD (in particular I saw some that shoot similar bullet patterns with the fairies in stage one of Subterranean Animism... they gave me PTSD)
...though... this game's normal... is Hard in most Touhou games... maybe LoLK's Normal. Definitely way tougher than what I'm used to... either that or maybe I have rusted this past few months -- got game over at stage 4 on my first try.
Definitely very good stuff. Enjoyed it.