Sakura + Ume + Saboten... no comment.
Only this 3 girls can produce a lot of damage.
Don't know about Edel and... oh no... I don't know that Baseball bat holding girl name.

It's kind of good idea, don't know it will work on RE Aqua-boss map or not.
They might weaker than Nodhogg, but they always come in pair... or more in future Re Aqua-boss map.
I think I'll stick with my debuff + solar build.