Sometimes love is someone else's thing. You see it and feel it, but it may not be your own. Ling and Yu share the same body after time travel, thinking they will meet their destiny, but in fact they are just dolls teased by fate. In the end, one chooses to stay and the other chooses to go back.
A pair of brothers, whose lonely longing lasted for a century, brought their destined lover, but arranged another ending for themselves. After all, love is elusive and impossible to understand.
The story tells us that there is no love without reason in the world, and there is no hate without reason. There are only those reasons that you have long forgotten.