There Is Something Strange in My Ancestral Hall

His left eye could see strange things - the black air above the ancestral hall, the gatekeeper who had come back from the dead, and the clan elders who were cursed. When the world of immortality showed its bloody fangs and others asked for immortality, he just wanted to live. Use human eyes to see the secrets of strange things. Kill decisively and move forward step by step. From a waste on the sidelines whose salary was deducted, to a mortal who is talked about in all the worlds... A mortal.