Song Yuji has the ability to travel through space and even dreams, but the corresponding price is to be forgotten by the people around him. He is lonely, watching everyone who was once close to him become a stranger. Later, the only sister who will not be affected also passes away one after another, and he does not know the meaning of life. Later he met a man named Xia Qingze, who always seemed to have a familiar feeling...
Intention: Learn to face separation