Important Trait Notes: HPO has extra attack, Twilight Thorn has -60 ground. The latter in particular makes it a good medal to use on the Morning Star despite the type disadvantage so by your next turn lexaeus can finish the job and leave you with one less enemy to worry about. lexaeus B has -60 ground.
Round 15/15 Notes: Ngl, this involved a lot of RNG. Part of it was because of the way the enemies were positioned could make it hard to lock onto the one you wanted to attack. The rest was because even with x3 defense buffs with this set up, at the end of your first turn the Possessor can sometimes use a move that inflicts all status conditions and just kill you on the first turn... or any turn thereafter. When it doesn’t do that, the x3 and defense boost II max does the job tho. Make sure to try to use single target medals and only attack the possessor with a single hit MVP damage medal (I would at least recommend this). YOU DONT want the counter to hit 0. So be patient and take a few rounds to just defend and restore gauges when needed buuut keep in mind the possessor has a time limit of sorts in the form of it’s counters so you gotta take it out before it reaches 0.
other notes: skill perk is 30. this is not necessary but please wear as much skill perk as you can