Finally I can play as the U*O Reverse Card!
The vibe is similar to Touhou 12.5: Fairy War, in that the concept is about using the enemy bullets against them. And that's pretty neat.
I almost didn't get to see the 3rd part of the game because it just stopped after the Letty fight, on my very first playthrough. The convo bugs are weird.
Good old Seija, doing what she does best.
P.S.: In the current build, I found myself wishing Seija's charging was a tad shorter, but the balance is surprisingly fine.