for what i tested so far the best lineup for world boss for azure fang currently is this one:

talents: 41411, summon: tonton.

select utakata with bee in round 1, and haku in round 3.

use haku prompt mystery only in round 3, after main landed her damage (if you don't lag at all you can wait for the clone to deliver it too, but usually the chases let you delay regardless) and reapply the barrier asap in round 4.

beware: you need to retreat at the end of round 4.

it beats by around 5% the outcome of hashirama, tenten gnw, iruka lineup and by around 10% the outcome of wb asuma, iruka, tenten gnw lineup (currently 2nd and 3rd best lineup).