No diapers, shorts.
40 days ago(-3)
I can tell they are shorts in the later days of Genex 1, but through most part of that game, it's a diaper.
With shorts\boxers, the legs are longer than the crotch.
With briefs, yeah, the fabric covering the crotch does hang down lower than the fabric on the legs, but the fabric and cut of briefs are different than diapers.
This is what your man was wearing, based on the fabric style, and the cut of the padding in the crotch.