Heavenly Demon Instructor

In a world where super-powered heroes fight extradimensional monsters, Hyunsoo is just a puny supporter without any powers. That is, until a god-like grandmaster named Chunma from the medieval past shows up out of nowhere and becomes Hyunsoo’s teacher. Visible to no one else, Chunma secretly tutors Hyunsoo in the way of the fist. But when his new powers force him to join the battle against the monsters, Hyunsoo is thrust into the front seat of a wild adventure, with Chunma along for the ride!

“Master, what’s the next lesson?!!!”
A disaster that struck the earth, [Portal Impact], caused Park Hyunsoo, the MC, to lose his parents before his eyes.The only family member he has left is his younger sibling who is unconscious.In order to protect his younger sibling, he did his best but as a powerless support, he would always be on the other side of contempt…And that’s when a helper, Chungyeong, appeared!Chungyeong, a murim martial master that has travelled through time to come here from the Murim to teach Hyunsoo martial arts…
“Hey, disciple…”
“Yes, Master.”