Regret About Changes in Tomb Robbers

(There is OOC in the book, because the characters I like have filters. Some of the filters are really deep, and I don't want to change them. It's possible that the characters I understand are different from your understanding.) The protagonist travels to the world of tomb robbers and is bound to a regret system. You can get corresponding rewards when you heal a regret. From then on, the protagonist begins to heal regrets and change the original tragedy of the novel.