The Ordinary Guardian in the Armor World

Fan Huang, thirty-two years old, an ordinary modern man, transmigrates to the Armor World and binds with a self-created armor system. The world is still the same, just with some things that shouldn't be there. He uses the system to create armor and fights alongside the Light and Shadow Armor. Armor has never been about glory; it's a burden of protection. Life goes on as usual, with daily necessities not lacking. Even with armor on, he hasn't changed—still the same person, still the same way of living. He knows exactly what he's doing, that's all. — Description from novelcodex.org