Oh yeah, so the other day I was at work, going on last.fm listening to some Japanese stuff for whatever reason, and Lotus Juice randomly popped (a non-Persona song), so took a look at his page and saw this:
In the anime Soul Eater, he rapped in the tracks Bang! Bang! Bang! Bang! Have a Nice Dream, Death The Kid, PSYCHEDELIC SOULJAM, and STEP UP.
http://www.last.fm/music/Lotus+Juice?ac=lotus+juice
I must say that I was surprised since I watched all of Soul Eater back then without even knowing that! And that was more or less during the time I was playing P3.
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O brilliant blade of coldest steel, rend the infinite darkness and crush my enemies to nothing... SAVAGE WOLF FURY