That looks like a sort of Breakout game. This sounds fun but I think there's room to flesh out the core concept.
The gameplay works but it lacks just a bit of substance. Most of the game feels like it's just waiting that the jiangshis get hit. You don't have real control over the jiangshi heads despite of the scythe ability.
Things that can be corrected: losing restarts the game and the cutscene is not skippable so it's a pain to restart. Seiga and Eiki's dialog texts are too hard to read (it's dark-colored fonts over a dark dialog window over dark background, yikes.)
However the visual art and the music are great for a 72-hour game! The portraits and illustrations (three of them!?) look good.