Probably one of the more realized ones of these I've seen, even if it's still a demo.
It also reminds me a lot of this old Danmakufu script but with more... contemporary subjects of online adoration: https://www.nicovideo.jp/watch/sm22835101
Alternative is the highest difficulty and it's pretty silly.
Some very volatile RNG in this. You can get "epically owned", as the kids say, if you're unlucky (apparently there is an update already that adjusts some patterns).
Nene and Botan are pretty terrible.
On their nonspells bullets can come back from the bottom of the screen and it's very jank.
It's pretty jarring to go back to base ph3 after all the recent Danmakufu fangames that use a modified version of the engine that greatly improves performance.
Also no replays in this for some reason. Hopefully that gets fixed for the full version.