Seriously, I hoped he just be adopted child. Would make sense and be immserive. but nope. the author doesnt seem to realize you cant be human if you Orc, Orge, Demon and Angel as your parents. :/. You dont just come out human. Really brings this manga down by alot. Cuase its retarded. He should attend the special class before writing this.
But moving on, They said the dragon was male right ?, then why has it acted liked its female, hosed him down when smelled thot pheromones on him,. and gave him a kiss on the cheek ?
Has he lifted up the leg and checked ?