•The two were reborn at the same time. They were both bound by the quick-travel system at the moment when their souls left the body after death, and entered the first small world.
•After rebirth, both of them retained the memories, emotions and skills of their previous lives, but initially they did not know that the other had also been reborn. They only felt an inexplicable sense of familiarity in certain familiar scenes or the other's habitual actions.
•As they get along with each other in various small worlds, the two gradually discover each other's abnormalities. Through a series of trials and coincidences, they finally confirm each other's twin identities. The misunderstandings and regrets in the past life become the catalyst for the development of their relationship in this life.
