@EEEEEEEEEEEEEEEEE
The novel explained much more of the process (novel chapter 37)
But from this manhwa it's due to the fact when the mc takes in the venom of the demonic snake or eats it he gains their atributes and features, from his first he gain reddish eyes and better eye-sight similar to a snake, but as he only has snakes, to use as food and other supplies his appreance keeps changing due to the snakes atributres and dna, so he is like a living human of a demonic snake.
Meowmeowmeowmeowmeowmeowmeowmeowmoemwmeowmeowmeowmeowmeowmeowmeowemwoemwoemwoemwoemwoemwoemwoemwoemwoemwoemwomeowmeowmeommeowmeomwomeowmeowmeom(i just like typing)
Bl scares me.