Following a near-death experience, an otherwise ordinary young man named Noah finds out that he has become immortal. Deciding to make good use of his abilities, he becomes a bodyguard, but an unexpected side effect of his powers forces him to quit the job.
It's then that he meets a shady-looking man named Allen Lewton, who offers to take care of that particular side effect in return for his resuming bodyguard work...

Note: Pocket Comics counts the side story and extras as chapters and also includes an epilogue.

Original Webtoon:
Naver Series, RIDI, MrBlue, Bomtoon, Lezhin, Anytoon, Bookcube

Official Translations:
R19: English, French
R15: English, Thai
Japanese: Comico, Beltoon, Lezhin, cmoa, Mecha Comic, eBookJapan, LINE Manga