I called this deck, Sichibukai deck :D

Renge is crap. Get rid of him he slows the deck down. Deck needs DAD. Get rid of Giant Orc in favor of Barbaros and knock Fusilier down to 2 since he sux without Skill Drain. DDV is sorta meh imo. Same with EEV. I understand it's supposed to be an OTK but it could still use at least a couple defensive cards because it's just not fast enough to pull off the OTK every time so you need some backup at least. Final fixes from me are:

-3 Renge
-1 Fusilier
-3 Giant Orc
-1 Lightning Vortex
-2 DDV
-1 EEV
-1 CCV (without Renge has no targets)

-12 / +12 = 40 cards

+3 Barbaros
+1 Morphing Jar (a must in DW)
+1 Breaker (staple)
+1 DAD
+1 Mirror Force
+1 Torrential Tribute
+1 Smashing Ground
+1 Kahkki
+1 Gren
+1 Giant Trunade (quasi-staple for OTK decks)

Barbaros gives you more bang for your buck and is usable even if Skill Drain isn't on the field. Morphing Jar is just a duh for DW. Breaker, Gren, and Trunade up you to 5 s/t control cards which is more reasonable. DAD is just duh in a deck with Darks and grave control.