Wow what an insane game. I was already totally hyped about this one, since I love shmups and played other edelweiss productions already, I knew this will not turn out badly.
So first what makes it different than other shmups, you have a f*** big sword. It was the first shmups I played where you fight close combat.
At the beginning I was a little disoriented because most danmakus/bullet hell you have to evade the bullets, so every new game mechanic which involve you to "absorb" bullets makes the gameplay really interesting.
In addition I dislike the limited continue system in other shmups, these were acceptable in the arcade era but not nowadayws so I prefer the checkpoint system, where you can instant starts over.
And even the story feels great, ok nothing more then the standard cliche anime but who cares, I like the ending, I like the characters (awesome seiyuu) and since it is mostly a highscore/gameplay-driven game it is a nice extra.
What is left to say, actually I only finished this in easy mode (yet) because I struggle on my first try at normal which is great, because at first I did not understand the score/health system and in my opinion shmups have to be difficult. If I could finish a shmups on first try in normal something is definetly wrong. So for people who say it is short and do not have enough content, this is not a game made for them, you have to set you own goal and play it over and over until you beat the next stage, get higher score, no damage etc.
Play this game one or two hour, get better with every run until finally beat the stage and this will be the most satisfying game moment ever, at least for me.