Slay the Gods: Trade Points to Erase Karma

Song Qianyue never imagined that after dying suddenly, she'd be bound to a System and sent into the world of the novel she'd been longing to read before she died. And this System was actually designed to win people over...

“Then... can I change their endings?”

“In theory, no. The karmic consequences of changing an established ending would fall upon you. But the affection you earn by winning over high-quality men can be exchanged for points, and different amounts of points can offset the karma caused by changing the plot...”

Beloved darling + all pairings + she won't be strong from the start + the writing isn't especially polished + the System doesn't play a major role early on...