>>535393291
this was not the most efficient way to do it since I did it spontaneously/first try but basically. All LB1 characters except for Mion who is LB1. Inori does have a Daphne.

>Adel self funnels x2 then skill orb + wait for EX SP
>start buffing Inori just enough to break DP bar (around 1 round of buffs)
>rotate team around as needed to absorb damage
>Mion pops EX to heal everyone back up
>Inori breaks DP
>Adel goes for the EX and maxes out DR
>By this time you should have close OD 2 from all the funnel EX skills
>use more Mion heals to heal up + charge Inori
>Pop OD 2 when you get it for the kill turn.

You can use any Blaster instead of Adel, just use the 2 blaster skills after the bar breaks since you only need to reach 500%. The boss can hit pretty hard, about two good hits to break, but Mion can overheal with clock tower buffs. And iirc no shield broken bonus still applies if you use Vivifying Light which you can use during the OD turn after getting enough SP back.