Well, there's always the occasional good star trial unit such as the swordmasters and Miruno (aka best angel).
On another note, finally beat Furfur lv. 5 in time before it gets removed tomorrow. All it took was using up ALL my plat fairies and nearly all my plat armors to raise Livre and Aida and 1 SC from screwing up twice. Had to change my strategy from sennen war's guide (https://www.youtube.com/watch?v=59qIeuhk6TE) and it worked out pretty well. Gotta say, Fiore and Livre were pretty darn amazing after I used them. Fiore's skill of giving everyone in her range stealth helped me out greatly and Livre's skill is pretty powerful with her giving all enemies in range damage over time without even lifting a finger and her tokens can hold up on their own. I was kinda forced to raise Aida too just to have a decent ranger in my team because traps too OP'ed and don't cost any unit space. Thank god Furfur's defence isn't so high so my units were able to take it out by the time it reached Shino.