The entire f-ed up plot- 'Benevolent' high school bully becomes nothing in life but a fried chicken delivery man. After delivering food to a now rich and powerful dude he 'saved' in highschool (MC didn't stop the bullying, just the stealing of their money), he gets betten up and forced to watch the other guy sleep with a hot chick.
After being told by the now rich kid that he will bully the MC any chance he gets, MC heads home. On his way home, he transmigrants to a world where anyone can have sex with anyone, vegitarian sedatives are plentiful, with only pretty elf like people who do not seem to die of old age. A utopian world of sorts.
MC proceeds to DESTROY the ecosystem of the island beyond repaired. He killed the kind cat/seal animals for meat and subjugates the populous with this new secret food source. Be also has the women only sleep with him. Greed, hate and food shortage occur before he burned everything by mistake. His 'lover' dies while protecting the MC from someone he was going to kill by slow starvation.
MCs protégé takes over and cuts MC out of the food chain of the island with even more horrific results. The indigenous people have great strength and the protégé beheaded anyone who tried to take from his, and most likely the last, tree of fruit.
MC finds a new love (she was a knight figure when his first love was alive and MC ruled with fear) and she prostituted herself to the protégé for food. MC knew but will not admit it to himself. After he said to her he wished the protégé dead... she tried for the MC during sex with the protégé. MC soon found her head on a stake.
Now unlivable, he left the island for another he only noticed after the second 'loved' ones murder. He tricked his protégé into making a raft and they flee. MC drugged protégé and throws him overboard the raft. This time, he lived quietly along side the people until he felt bad for those he ruined on the first island and goes back.
The cat/seals are now GIGANTIC and eating the people as a food source. The main animal was a "too small to eat" creature harmed by MC at the begining of the story and the MCs 'son' (somehow by the first 'love' because their hair is the same as first 'love' probably a delusion).
MCs arm and leg are torn off by the creature/son duo. As his body grows into a tree, he is filled with regret for his choices in life. Instead of a normal fruit tree that the natives bodies are supposed to grow into when they pass, his tree is as gigantic as his ego was. Instead of growing large fruit to save the island and maybe salvage the system...the tree of the MC reaches up to the portal for Earth.
Earth is no match for the creatures as they are eatten. The last person we see die is the bullied but now rich kid that first said he would ruin the MCs life in chapter 1.
The bully and the one who then used their power to bully even though the knew what it felt like suffer, die. Worse, so many innocent lives suffer because of the power struggle.
A World That I Rule