American Tax Officer - Chapter 2 - : I Can Be the Chief Tax Officer Too

Kuramoto Daisuke, a freshman in High School was suddenly exposed to someone vanishing in front of him. Turns out he was admitted to a Special Class full of Isekai Heroes that were regularly summoned to Otherworlds since the start of their Middle School. He was told that he was to become their Support to prevent each of the Heroes' fate of dying in the world they were summoned into. Though mediocre, he realized that his ability has a great potential but it needs a lot of hard work on his part.

Unconvinced of being just the Support Character, he vowed to excavate his mediocre ability, all the while supporting the Heroes using it.

And maybe more.

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

She and the blind date met man get married soon. She did not expect that the "ordinary" new husband turned out to be the CEO of the company she worked for.

I tried to establish the Tokugawa Shogunate in another world.With the knowledge of the ruler of the country, the young Ieyasu unifies another world!?Has the era of Ieyasu the old fox already over!?This is the story of the super-cheat young Ieyasu and the naïve elf princess unifying another world!Tokugawa Ieyasu, the ruler of the country.He thought he would die a regretful death after eating tempura, but he suddenly found himself reincarnated in an unknown world with a 20-year-old body!?Moreover, after saving the elf princess, Seraphina, from a human thug, he is appointed as the general of the “Edda Forest”, which is on the verge of destruction.He is a coward and a thrifty person, who think that he can simply waits until his enemy dead before fighting.Ieyasu’s mind is not like a hero, and because of coward’s disposition, he begin to gather useful people in the “Edda Forest”.The cheapstake dark elves are are being made to raise funds.The dwarves, who dig holes all the time, are tasked with flood control work and building secret paths.On top of that, he even employs a family of assassins to control information.Ieyasu is reforming the “Edda Forest” to be like the Tokugawa Shogunate, butーー