He's My Fiancée ! : I Went Back To The Past and You ! - Chapter 352 - 353: The Master, Nephew, Disciple-III

The more he got to the Comprehensive world, Beiyuan Baiqiu originally thought it was just an ordinary Comprehensive daily world.

Who would have thought that after entering high school, unusual things would happen one after another, and I would awaken myself through the simulator.

Since then, Beiyuan Baiqiu has embarked on the road of being invincible.

[Demon Slayer, Campione!, No Game No Life, Problem Children are Coming from Another World…]

- Description from novelbuddy

Discovering that his wife was cheating on him with his superior, Jonathan Hayes was put on the combat list by his superior, a list that had already been concluded weeks ago.Wanting to survive from the war and come back to get his revenge on his wife and his superior, Jonathan was killed in the battlefield.Instead of going to heaven like every good man should, Jonathan woke up five years back in time, before his country was captured by the enemy, due to the help of his country's corrupt leaders. Jonathan knew his job immediately he realized what had happened to him. To liberate his country from getting captured again, and to get his revenge on his cheating wife and his superior.He had guessed correctly, but there was more to it. He not only went back in time, he woke up in a parallel world where magic was present. His job was not only to rescue his country from getting captured again, his job was to become the first warlord of the world. The first king of the whole world.[Congratulations, you have been rewarded with two unique skills from God]

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

After being given up on by his family because his dantian was destroyed, Soh Woonhwi was kidnapped by the Blood Cult and lived as a third-rate spy.

One day, he died while being used to find a legendary sword immortal’s secret records. However, he returned to the day he was kidnapped ten years ago and obtained a mysterious ability that allowed him to hear the voice of swords.