Originally Posted by ATXAlchemy

Santa Color Costume Set
2013/12/18 DLC
Every shinobi student (inc. Rin and Daidouji) will get a Santa-ish variation of their original costume. Will be distributed as a set.

There's also another pattern but you should look forward to them when you get them

Ugh. I need this.

I've been meaning to play Shinovi Versus on my JP account so I could grab some DLC, but now.. I think I really have a reason to. Plus, I still haven't played any of the multiplayer yet since the code that comes with the game is region-specific.