ADDICTEDAdventure/Fantasy/Webtoon

Did poorly in school, graduated uni at 40y, divorced, debt
He was transmigrated into his younger self. Change his fate
Decided to work hard studying, working out, earn money
He prevented his father from dying for stomach cancer
Previously was a doctor, uses his skills to earn everything
Uni. Nail his dissection class, major tests, ...
Was participating in a company, earned stocks as compensation

He was transported to another world and cultivated for 500y
Then he returned to his younger self in modern society
cultivates and become the most powerful man (teenager)
He gains connections to all big bosses and is respected by all
He kills/punishes disrespect. He kills grandmasters
When his hair grows, goes to the top uni to be a professor
His childhood sweetheart was waiting for him there

He returned to his younger self after death by beasts
Wants to prevent the distruction of Glory City, home
Was weak, but after 100's of years of experience, wise
Gives out cultivation techniques to his trusted allies
He becomes the youngest master alchemist, purple grass
His strength sky rockets, fused with a panda & shadow

He married his childhood friend, she has amnesia,
He Acts as a house husband, pretends to be weak
Someone hired assassins to kill his wife, protected her
He is powerful, in business world, connections, fighting

He was fired from his party for not having enough magic
Gets odd jobs, repairing the city wall, hired as a miner
He doesn't believe in his abilities, afraid of being fired, cute
Has more mana than a court magician, very fast at work
Able to find crystals in rocks, makes crystals 10x the power

9y old, lost in a plane crash, grew up training with soldiers
Returns home to grandpa & sister, he lives as a high schooler
His sis is bullied by mean girls, he beats up a gang to protect
He sent them away exposing the mean girls family secrets
A rich girl returns to school, she’s suspicious for his identity

He always wanted to be superhuman, became a spirit farmer
Able to produce high ranking crops. Harvested a spirit gardener
Has his own farm dimension, dimension guardian, horned rabbits
Rock-bees. Makes connections with a superhuman chef & alchemist?

Summoned to another world with his 2 friends (heroes)
He has a healing attribute, was taken by medic soldiers
He went through brutal training everyday, doesn’t mind
Was able to defeat a demon which the heroes couldn’t