I just solo'd him as nin/dnc. Took about 40 minutes, and was actually easier than expected.
Kept yonin up at all times, and always keep slow, para & blind on him. Yurin and Myoshu was also very helpful. Used movement speed atma, so I could run away from him after everytime he used draw in and spider web, put some distance between us so I could remove slow/silence/addle and put shadows back up.
Ofcourse he went yellow a few times while doing that, so he could have been stolen had there been any jerks around. I fought him up by the penguins btw.
Other than that it was a pretty straigh forward fight, just melee and store tp for waltzes and samba. Used Blade: Yu a few times though to put DoT on him. Was only one time I was a bit scared when he double attacked and used sickle slash right after, brought my HP down to 50 something, was praying to not get hit while running out of range to put shadows up and spam curing waltz II lol.
This is the gear I used
Kuina got EVA +5 AGI +2
My total EVA was 349 (skill) + 59 EVA from gear.
Good luck to other ninja's that wanna try :D