Sinister Knight: Dawn Of A Sinful Calamity - Chapter 10: Lustful Act 2

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

Based on the popular Vocaloid series, by HoneyWorks, called “Kokuhoku Yokou Renshuu (Confession Rehearsal)“:

Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him be her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?

Takuya accidentally travels to the world of Naruto with a max-level game account.As a mixed-blood Uchiha, Takuya states: “Sharingan? Mangekyō? Aren't these standard equipment?Once you reach the right age, don't they naturally awaken?Why do you need emotional trauma to activate the eyes?Why do you need to transplant eyes to obtain the Eternal Mangekyō?That's so outdated!A real man should awaken it on his own!As for the Nine-Tails, isn't it a common pet?Look, my Nine-Tails is even white!It can fight independently outside my body and even resist the Ten-Tails!This is how the Nine-Tails should be!Kurama, you...”Disclaimer: The cover image is not owned by me. If you are the original owner and would like it removed, please kindly let me know.

After reincarnating eight times unsuccessfully due to a glitch in the netherworld, Jia Hao finally reincarnated in the world of Urban Fantasy, an eroge game that he played before. However, he realized the game was currently in the bad ending mode and he is powerless like a side character without any game system.

Skinny dude who blackmails girls? Check!

Fat Ugly Uncle who lusts after women? Check!

Blonde haired delinquent whose eyes are covered with bangs? Check!

As Jia Hao was wrecking his brain to how to change the plot, he found a mysterious pot that can take him into an ancient world, and the items he brought from the modern world transformed into heavenly treasures!

“Now, you dare to gaze at my women? My dear wives! Beat him to death!” Jia Hao ordered as he leaned back on the chair like a salted fish.