People aren't lying when they say this is perfect. If I had to levy the single gripe I've got, it's that the game just doesn't have anywhere near as much personality as many other Cave shmups, kinda lacking that insane lust for life that emanates off titles like Progear and ESP RaDe.
Makes up for that with watertight bullet hell composition and some of the coolest mechanical design I've ever seen. School of "Just Graft a Helicopter To It".