Yes... HARU is the best SUPPORT in CZN (Chaos Zero Nightmare)

Haru with this deck is arguably the best support character in the game for characters who attack multiple times, in addition to dealing a humble 20k damage and 15 stacks of Agony, lol. She's definitely better than Cassius, the problem is that she can't perform a very important function that he does, which is sustaining the team. He provides 3 Fortitude which helps a lot in battle, as well as drawing cards