Dimensional reduction of M5 branes

We study dimensional reduction of M5 branes on a circle bundle when the supersymmetry parameter is not constant along circle. When gauge group Abelian and fields appear quadratically in Lagrangian, we can always obtain supersymmetric five-dimensional theory by keeping fermionic nonzero modes that match with corresponding parameter, zero for bosonic as usual. But non-Abelian generalization be found only under special circumstances. One instance where find perform null direction.