In this world, there is a kind of person who can coexist with two personalities. The first personality survives in the morning and the second personality in the evening. But one day, these two personalities had conflicts and separated automatically, becoming two different people. But he and she are always two people separated into one body. When the other person is in danger, they will feel that their blood is flowing backwards and their heartbeats suddenly accelerate. This will not happen if they find each other. Of course, they each have a bracelet on their hands. The bracelets are used to find each other. It is usually said that women like cherry blossoms and men like mandalas. And I am the subject, and he is my other personality. Maybe no one will know this secret, except my deskmate and good friend - An Kexin.