Ok first hhiiiiiiiiiiiii and happy bbs its me roxas and I'm back and better than ever I meant to post this on the day it came out but I was too busy playing it lol. Ok for those of u r like me that have beaten the 3 stories plus final episode have a lv 40 or above ven r good with the game and arena level 10 and above u r ready to take on the vanitas sentiment with my strategy. Ok lemme tell u. Ok u gotta have a mastered tornado mine square and salvation with mega potions on all ur open spots. Wen u start the battle(this is my strategy) attack him he will dodge annd instead of the shadow attack he will do something else keep dodge rolling from attacks until he starts running toward u wen he's near u use mine square to send him flying then immediatley use tornado and carry him off far from u repeat this and the battle should be quick u also have to finsih him with a attack with ur blade to finishh the battle I went flying and then did payback raid which ended the battle there r other wways but this is my way. If u read this b4 I modified the wikia strategy so al rights to wikia.

Thank you for the info Ill make sure to try that.

dodge, mine shield, repeat. Then attack or use mine when he fires his laser. Alot of dodging haha. I beat him yesterday lvl 57 ven

I kno the strategy gets a little getting used to so don't get mad wen it doesn't work the first time it is a tricky boss wen I beat the next secret boss I'll give an update.