gatekeeper of the boundless worlds

planets dying, gods falling. “anomalies” and “calamities” invade the human world. as a dark age descends, shen ye finds himself flung into this strange new reality. to his surprise, his power is to summon a door – a door leading to countless worlds, offering him a chance to adventure and train across the multiverse! beyond the door, he encounters a mysterious skeleton with an unknown past…