At the top of the food chain

Society is a jungle full of animals called men. Jay was a kid at the bottom of the school food chain, was bullied and betrayed.
A shitty sister. (check)
A shitty father. (check)
A friend from a traitorous childhood. (check)
Shit and more shit. (check)
Putting it all together, Jay has become an indifferent person.
One day, his grandfather took him to live in another city and helped him.
After two years, Jay will return as the biggest predator in this jungle called society, and will reign at the top of the food chain.
NOTE: Contains NTR, but 99.9% is in favor of MC.
The MC is not a good person, you have been warned.
If you want to read something cute and straight, this isn't for you. It's 99% ero and very absurd.
English is not my first language.