병약한 남궁세가 도련님은 흑화한 옛 제자가 무섭다

In the past, Eun-hyeon was transported into a martial arts novel called “Descent of the Heavenly Demon” where he raised the protagonist, Cheong-un, as his disciple. Unlike the original story, Eun-hyeon formed a good relationship with his disciple but eventually died following the original plot, and returned to reality.

In the real world, Eun-hyeon had been in a coma for 5 years before waking up. He tries to readjust to reality by going back to university, but he misses the martial arts world and the disciple he left behind. One day, while reminiscing about Cheong-un, Eun-hyeon finds himself back in the novel’s martial arts world.

However, this time he is transported 20 years into the future, after the novel’s conclusion, and possesses the body of Namgung Eun-hyeon, the sickly young master of the Namgung family.

And there’s this man who introduces himself as Ha Yeo-un.

It seems he might be the disciple Eun-hyeon once raised…?