Just got my copy... The box says both "Akai Katana 真" and "Akai Katana", should it be added as either of those or as "Akai Katana Shin" just to keep the english pronunciation?
Will post impressions once I've played.
*EDIT*
Since I'm still unsure how to add it exactly, I'll just post my impressions here.
Very fun game, really weird. It seems like a standard bullet hell at first, but it's pretty strange. You have 2 modes, attack when you're holding the fire button, and defense when you tap it. You produce different kind of resources depending on which mode you're in when you kill an enemy, and those resources can be used for different things. "Steel" in particular can be used to summon bullet-blocking projectiles that produce Katanas where they're killed, and those katanas produce huge point-items when they hit enemies. It's definitely a score-getting game (a good attack with a ton of katanas can get you millions of points in a second), but it's also really tough.
I like it.