well, to be fair, this was coded on scratch, so quality was extremely limeted. This is about as good as you can get on scratch.
Viewing post in Touhou Fangame ~ The Destruction of the Moon comments
it could've been better bro, i dont know crap about scratch but everything is eyeblinding, occasionally some bosses use normal touhou danmaku sprites when most of the time it uses eyeblinding circles and shapes. I don't get that?? and they traced dairi's art for no reason, they could've just used the original ones without fucking them up with the black lines
yeah, scratch is pretty good for beginners and just messing around, but kinda limited in the actual coding thing. but, even with that, touhou is fairly easy to do on scratch, after you get the game mechanics done. i've seen better.
to the dev: try danmakufu, it's a lot better than scratch if you wanna make touhou style games.