The riddle of EVE
Regressor instructional manual
Mc is trash. He has a super corrupt personality and because there is no backstory or scenes before the isekai, the readers don't know why and don't have any sympathy for him. He uses the people around him like play things byt it's kind of fun to watch him struggle through since he has interesting tactics and motives Ch 4
How to Live as a Villain
Mc gets summoned to another world where he has to fight like a dog to survive in the hopes of becoming gods successor. He was born weak so he'll do anything to drag the other competitors down
Seishun X Kikanjuu