Wit's manga / #secret identity(1)

Amazingly perfect, I need so much MORE!!! After being one of four survivors out of 1,200 in a dungeon that threatened the world ten years ago, Awakener Seo Chaeyoon lives a simpler life. He still lives with the trauma of the past haunting him and struggles to keep all the last wishes his fellow revengers bequeathed to him upon their death. But it seems more and more people are looking for Chaeyoon, and he has somehow been selected as someone of interest due to demonstrating powers above B class that he claims to be. He has especially caught the eye of top hunter Jihan ;)