3-5

Could you tell me which characters you currently have?

Yeah, among these, I think it's best to train and form a team with explosive physical characters like Sion Beast or Dive Gear Eris. After that, you can form Guilty Fuga or Dive Gear OverFlow. If you have them, you could also consider using Default Troy as a healer. (I don't have Dive Gear OverFlow, so I'm using Default OverFlow instead, but I think it would still be strong with Dive Gear included. Also, my Troy in the image is level 200, but it's quite excellent as a healer even without reaching that level, so if training is difficult, level 50-60 should be enough. Additionally, I felt a slight lack of firepower, so I added Three or Dive Gear Sonata, but you can clear it without them.) Just for your reference~