The Migratory Birds' Return

Male-to-Female Gender Change, Preferably with a Comic

Armor World: Fighting the Armor with Bare Flesh!

I'm looking for books like "Armor Hero: As a Human, I Make a Max-Level Debut". An Armor Hero world, but the protagonist is physically powerful and doesn't use armor. They have some kind of superhuman physique that lets them fight armor and mutant beasts head-on. It should feature lots of different Armor Hero series, from Japan and China,