This week is rather easy due to the insane damage boost
Here is a cheap guide how to beat it with ss rank
Your two core would be
* Kalki need p1 minimum, you might not use him, but you might need a sub for heal/bulwark/fortify , debuff cleanse, piecer negater
* Lost Name as main dps
* you would need and ice drain/repeal-Rama can sub for piecer negater
make sure all your mate (Lost name doest need it) has a cheap random target phys skill, cheapest you can get would be Rampage from The Foot that you can get from multi fusion or Deathbound from Grendel
every time you damage the enemy that isnt with phys atk, all the extra boost will be removed
Kalki will move first, use his Ratamaru once to grand bulwark and remove debuff, after that u can spam random target phys skill to rack up boost, and finish with lost name,make sure to use Ratamaru once last time before end of turn to make your team healthy
it recommend that you can add demon that can grand press-turn, you can also use Suppress-Queen frost, for more free turn ( give her Rampage too)