[Snake]

It barely sees use, and when you use this, you don't have a single Boxer skill that costs 10 FP that you can benefit of on the next round.

Could be changed to this instead:

When you select End Turn with at least 3 Momentum, you recover FP, based on Rank and your Schwarz Sturm LV. The recovery is doubled if Boxer is both your Main and Sub Class.

(This will reduce your Schwarz Sturm LV by half, min. 1; Effect has a 3 round CD.)

Rank 1 - 2 FP + Schwarz Sturm LV * 1
Rank 2 - 4 FP + Schwarz Sturm LV * 2
Rank 3 - 6 FP + Schwarz Sturm LV * 3
Rank 4 - 8 FP + Schwarz Sturm LV * 4
Rank 5 - 10 FP + Schwarz Sturm LV * 5