That was close. This was a fun challenge for me and took a lot of planning and several attempts. I hope you enjoy :)
This team is really nice because it allows you to cancel nearly all the triggers and ougis the boss throws at you.
There were only a couple technical errors like not using Lucio's second skill before using Qilin summon due to my being absorbed in the moment, but I think a lot of my decisions otherwise (like delaying Qilin almost as long as possible) caused me to beat it.
AX skills on chev/luminiera swords:
3.5% multiattack on 3 chev swords (second skills on two of those being 1.5% DA, and 3% CA DMG, no second skill on 3rd one). 3% ATK and 1.5% TA on the 4th chev sword.