Legend of the Planet Builder - Chapter 259 - 233: The Power of the Plasma Cannon! (8000, seeking subscriptions and monthly tickets)

Kai was a 17-year-old dropout. A NEET. A background character in real life with nothing to his name but bitterness, novels, and guilt. After his parents died, he gave up on the world. People were fake. Dreams were pointless. And that one novel he kept reading? He hated it especially the main character, June. Perfect, noble, always standing tall. Everything Kai wasn’t.Then, one night, a voice asked: “What if you did meet June?”He said yes, half-asleep and half-mocking.Now he’s trapped in the novel. Isikeid. But he’s not June. He’s not a hero. He’s not even in the main cast.He’s an extra in the background of a world he knows too well and he’s had enough of watching things play out the same way. This time, he’s going to change everything. Whether the world likes it or not.

[Ding!][Ultimate Tycoon's Perfect Life System Activated][Spent $100,000 in an hour. 10x reward unlocked. Earned $1,000,000][Make the Villain beg for your mercy. Get premium limited edition super car][Destroy the hero who tried kill you. Get a villa worth of $500,000,000][Become the ultimate tycoon]James was an orphan has never had any luck in life, but that changed when reincarnated in his favourite novel, and got the best gift a reader could have get.“Do you want a perfect life?”The moment he accepted he transmigrated in his favourite novel and woke as poor character who got off-screened by the author.But the story he knew isn't the same anymore, the characters have their own free will, villain's may become hero's, hero's may become villain's. Constantly trying the damage the original plot he knew.But as a veteran reader how could he lose?No matter what happens he will protect his waifus, he will thrive, he will rise. he will become the “Ultimate Tycoon”

Xia Zhijun got the title ‘study god’ after scoring first place in the whole city. He’s the model of a good student in a teacher’s eyes: good grades, good manners, and quiet. When he wasn’t smiling, his entire body emits a cold abstinence aura. The girls only have the guts to look from afar and not get close.
Later, it was rumored throughout the entire school that even the study god would fight and hit on girls. Whoever dared to provoke his girl, he would teach you how to be a person at every minute. The night of the graduation ceremony someone saw him blocking Gu Siyi in the corner. He didn’t stop kissing even when she cried. He bit her lips and said in a raspy voice, “I’m going crazy…”
During college finals, Gu Siyi almost bursted out crying, “I’m such a failure. I won’t be able to find a good job in the future…And if I can’t find a good job, I can’t provide for myself…”
Xia Zhijun played with her pink earlobe and remarked, “I’ll take care of you.”
After they graduated, Xia Zhijun created a research company and Gu Siyi became the boss’s wife.
The commercial rocket, “Star of Siyi” was successfully launched. So everyone knew that the new technology superstar, Xia Zhijun has a wife who he spoils a lot.

- Description from Novelupdates

A Japanese salary man was reincarnated in a different world with swords and magic. He reincarnated into the family of a powerful noble. One day when he became twelve years old, he was suddenly summoned by his father.

「 I do not mind whether it is a woman in the town or a maid in our house, learn about women.」

Having gained the permission of his father, he uses his power as a noble to have his way with women.