Try chojuro ao haku or chojuro ao guy both with azure fang. Chojuro best stat is attack (tai) so he benefits a lot from atk boosters like guy. Remember his passive is wrongly translated, he gets boosted by other water attribute characters, he doesn't boost others. People use ao because if the clones are alive they boost chojuro.
If not you can try MB with guy, iruka, chojuro.