Clearing The World That's Inside A Novel - Chapter 7: Hunting Slimes

Satou Shiki a Japan present-day university student suddenly one day he got attacked by a slasher when he open his eyes he was already transferred to another world’s labyrinth city. In that another world he who was awakened to do a lot of “things”.

One morning after being struck by lightning, Ye Wenxuan inexplicably gained the superpower of being able to generate electricity.

If he jammed his finger into one of the generator terminals in an electricity power plant, he could provide a year’s worth of power for 3 Tier 1 cities simultaneously, receiving the name “the mobile nuclear power plant.”

The country’s electrical company’s boss held his hand, speaking emotionally: “Comrade ah, the country’s future electrical development will all depend on you!”

Ye Wenxuan: WTF

Later, the “mobile nuclear power plant” was dispatched to be a bodyguard for a local tyrant.

Xing Yuan coldly said: “Just now did you or did you not electrocute me?”

Ye Wenxuan pointed to the heavens and swore: “I am an honorable employee, how could it be possible for me to make a move on my employer!”

Later on…

he made a move.

- Description from Novelupdates

An ultimate warrior, the one and only Alchemy Emperor, Ling Han, died in his quest to achieve godhood. Ten thousands years later, he, with the ‘Invincible Heaven Scroll’, was reborn in the body of a young man with the same name. From then on, winds and clouds moved as he set himself against the uncountable geniuses of this new era. His path of becoming a legend has begun once more. Of all eras underneath the heavens, I am the strongest!

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.