I like the art and the theming so so so very much. The music and the wild west with some neat character introductions before battling? Wonderful! Their sprites are vivid and well drawn. But the last boss is clearly not just Dokibird though, it is the Christopher Robin of the game jam. Absolutely broken, extremely unfair, ESPECIALLY the fakeouts, very not fun. I want to beat it, but can't. The rest is great, but that fight immediately takes all the fun away. Needing below 0.3 second reaction speed while also having to check if its a fakeout is crazy expectations to put on a player.
My suggestion is to do it in a pattern. Maybe only at the start, or once every 3 markers. It would be more like reading her intent, because at random is exceedingly punishing and not fun.
Also, randomly getting a strike when an active (not fakeout) marker did, in fact, appear is quite frustrating. Keeps happening on the Doki fight.