I Kill Demons in the Human World, but the Demons Call Me Ancestors

My name is Zhang Yifan, and I thought I was just an ordinary person. Until I saw my roommate being murdered, the sealed yin and yang eyes opened, and a strange totem appeared on my stomach. Only then did I realize that the backside of this world is crawling with monsters. In order to find my missing parents, I was forced to join the "Alternate World Alliance" and walk on the edge of a knife every day. As my strength escalated, the totem on my abdomen began to show strength beyond my expectations. During a mission, the powerful monster lay on the ground and called me "ancestor" I sneaked into the upper echelons of the alliance and looked through confidential files There were arrest warrants for my parents lying inside! The dusty past is revealed. . . Should I run away or fight? !