Check out this great Akai Katana review from the guys over at Destructoid!

9/10

The majority of people may look at Akai Katana from a distance, wondering if the slowdown is intentional (yes) or if a 1cc on Novice counts (no) or if this is a good starting point for a Cave newbie (maybe?) For fans of the genre and developer, Akai Katana is going to be one of the best times you’ll have with a game this year. For everyone else, you may just find yourself ascending to bullet hell heaven if you dedicate some time to learning the game’s obscure but absolutely thrilling mechanics.