Reincarnated as a Great Saint

After dying and living again, living and dying again, reincarnation is like a single-player game that can be restarted infinitely. Until this time - there was a BUG in the system. He was gifted with language proficiency upon birth, and he also had an epic CG of "empire destruction" in his mind. A marriage contract tied her to a "sick" prince who was good at acting, and she was forced to get involved in the battle for the royal family's inheritance. What's even more exciting is that a beautiful girl in red teleports to the door in the middle of the night, insisting on making her a "candidate for a saint"? "You want me to be a chess piece? Are you worthy?" Looking at the group of smart "players" in front of him, this hard-core master who has lived for countless versions decided to teach them a lesson——