Crime lord Yoonshik takes a little boy named Jiwoon as collateral when the child's father hangs himself from debt. Eight years later, the boy is working as Yoonshik's bodyguard. When the boss gets locked behind bars, Jiwoon is sent to work for another middle boss in the city's red-light district. There, Jiwoon meets a mysterious mute, Soohan, and everything just might change for him.

Original Webtoon:
Lezhin (R15), Lezhin (R19)

Official Translation:
English: Netcomics (R15), Netcomics (R19), Lezhin (R19), Lezhin (R19) Webtoon Edition (color)
Vietnamese (R15)

Old Note: The entire series is available from NetComics however, the digital version is 9 volumes long, while the printed version is only 4 volumes.
New Note: Due to the series expiring on Netcomics, it was re-added back in Nov 2021 as single chapters instead of volumes.
It was also re-added back on Lezhin hence why they are dated 2021 instead of 2014