The current best team available for Azure Fang for World boss is this one (or at least is the one that grants to me the best outcome):

Azure Fang Haku x

Bee SST Utakata x

talents: 41413, summon: tonton.

bee mystery on haku in round 1 and 3, haku mystery in round 3 after main used her standard attack and all the chases are delivered.

the haku i talk about is not edo tensei haku but the normal version of him because is 5 star, gives you a boost also in round 4 and his standard attack hits way harder.

The damage delivered is around 20% higher than the tenten gnw, iruka, wb asuma lineup that beats the haku, iruka, tenten gnw one by around 10%.