Ever since you removed in app purchases Ive been playing this much more. Though I do have something you should do if you want to make it a full on fan game. Time Traveler (Komachi) mentions before her battle with Yuyuko (or others I havent played through them yet) that she got those powers from a friend. You should implement an extra stage off to the side that introduces the friend that Time Traveler got those powers from. Just a little idea, and it gives you a reason to make a really hard boss with many lives and such. Have it be unlocked after the player finishes the game on any difficulty. Please do! I would appreciate this and actually Im sure other people would appreciate it too!
PorscheDoc61 about Orient Fantastic Dream