Skeleton Knight in Another World Vol 1
One day Arc wakes up in the world of his favorite MMORPG.... and discovers that he's become exactly like his game character, a heroic knight who just so happens to be a skeleton! The whole skull-for-a-head thing is maybe going to be a problem. Arc resolves to keep a low profile, lest anyone mistake him for a monster, but he can't quite manage to turn a blind eye to the troubles of his new world.
Adventure awaits, and the Skeleton Knight will be there to meet it!