Because that is literally what it is.

The healing in that boss fight is laughable at best and I can do it sooooo easily. BUT I STILL HAVE YET TO GET PAST IT FOR ONE REASON: DPS.

I am frustrated and not even sure what to do, need I really level up a ninja MYSELF to get past this infamous hurtle? My heals are on point but I can't help I am a healer main and not a DPS main.

I just- ARGH THE FURY.

If I just beat bismark ONCE I would easily have the ravana weapon in a day.