Goodbye Pot, Hello Fire. Any advice on , other than bringing in a friend Gil?
For that fight in particular, my party consisted (almost) solely of people to either extend the lifespan of my support Archer or to cut down on the boss's NP by either stuns or drains. I chose to take Euryale for support, even though the boss is not male for a damage bonus or charms, she can still drain the NP charge which keeps everyone alive longer.
In the first round, the boss won't use NP, only extra attacks, so you can save party-wide evade/invuls until round two where the actual wide-range NPs come in. My full setup was Kintoki Rider, Mash, and support archer in the front line, with David, Kotarou, and Vlad in the back. With Kotarou being the final evasion giver in my party, I set him up with the Nightingale CE from Go West so that after he dies, Euryale and Vlad will survive a little better from the defense boost.
Kintoki was just there to help burst down round 1 as quickly as possible after Euryale's NP was charged (saving hers for round two) because he's currently my strongest, but he very well could have been another stun user. In round two, each other member in order takes their turns either making Euryale invincible or delaying the boss NP in the case of Vlad's Vampirism.
In the end Euryale still had to eat an NP because of poor card selection not letting me charge a second NP quickly enough, but she should be able to survive one round easily enough.