Mujigaereul Boneun Cheonjaemabeopsa

In a world where you must steal or be stolen, kill or be killed, Ray, an orphan from the 50th sector, possesses the unique ability to see mana in the form of colors. However, despite the colorful sparks that fill the world around him, his existence has been numb detachment, completely devoid of emotions. But when a life-altering event shatters the cold, unfeeling life he once knew, Ray's journey might just unfold into a story richer in color than he could have ever imagined.
(Source: WEBTOONS)