The vector of Agito is nicely done,but somehow,the bg is not so appealing...A more stone like texture would be better,like granite floor or something...also,did you leave only one floor tile other color on purpose?it's just strange to me that way...
I think you need more stuff on the floor too,to fill in the emptiness...like some flowers,or random stuff,like a pack of cigars,a lighter or something...not sure what would fit Agito's character though,never watched the series...
Anyways,it's a neat wall overall,but I feel it could be better :)