Everyone has a past and something they never forget. At the last moment of their lives, they always regret it. The things they cared about have become old dust
In the human world there is a shop called Wu regret. Here he can make up for your regrets, but he will pay a price
And Chu Zhi, the owner of the old world, is also slowly looking for her old world and making up for her regrets.
Intention: love