The Scum Villain's Self-Saving System is a fantasy comedy danmei (m/m) story. I bought my copy of this volume brand new.
Review:
Shen Qingqiu (SQQ) has submitted to Luo Binghe (LBH), which makes him more than a little uncomfortable now that he's finally realized the book he's in has long since become a danmei novel and he's LBH's love interest.
Luckily for SQQ, there are still plenty of hidden storylines and details to save him from having LBH's undivided attention. Unfortunately, one of those hidden storylines involves LBH's father, who's so powerful that even the webnovel's original author never thought up a satisfactory way for LBH to beat him. That's going to be a problem.