Fire is one of the easier ones, and that's not just because my main is Water. The trash all have the same identical ability that can be easily ignored. One ATK buff isn't sufficient to make the trash dangerous, and the overdrive damage is low. Compare to Wind, where the buffs stack and can get out of hand very quickly, or Water, where an AoE overdrive can be buffed by a single character's AoE ATK up. The mid-boss is similarly straightforward.