I like the Sumireko sprite. I appreciate the generous amount of health pickups. (And the fumo, lol.) The aiming feels nice, though I'm not really sure when my shots are hitting and when they're not.
I had some issues due to the shift key being painful for my hands to keep held down for so long.
With the slow movement speed + big open levels, I think I would have liked a dash, or faster movement when not in combat. I went through what I thought was the whole map twice, and didn't find anything to do other than shoot stray fairies. I guess I missed the boss somehow.