The apocalyptic boss who crawled out from the mountain of corpses and sea of blood is calm and logical, and regards "idiots" as the public enemies of the universe. For her, being bound to the "merit system" is like playing a simulation business game of "clearing out garbage".
The heroine is determined to "physically save" her whole family, but the whole family is trying their best to save themselves, and an unexpected combination of circumstances puts her on the altar.
"The system of meritorious deeds." Merits can be obtained by saving people, punishing evil, and promoting the progress of civilization. But the system has a hidden mechanism: correcting the fate of a "destined evil person" can gain a hundred times the merit. The heroine chose the most "efficient" path-to destroy the "evil people" in the whole family by changing their nature and making them rational.