Murim Heungmagui Mangnae Jejaimnida

Behind every great force in the martial world lies a hidden mastermind who secretly controls its fate, planting legendary treasures, powerful elixirs, and life-changing opportunities to shape history from the shadows. After being transported into the martial arts game they were developing, one person struggles to survive and ends up becoming the disciple of that mysterious mastermind. Along the way, they rescue a young slave destined to become the future Demon Lord. But as the child grows into a powerful warrior, his gratitude slowly turns into something far deeper, leaving his bewildered mentor to face an unexpected confession.

Original Novel

Original Webtoon:
KakaoPage, Daum

Official Translations:
Japanese