Isekai Elf King: Architect of a New Empire

Leo, an engineer, was Isekai\'d across to another dimension. The one summoning him meant for it to be like every other isekai--get a body and some cool powers and right an ancient wrong. But the ritual is messed up, and Leo goes over with a loan shark and his minions--who start building an evil Isekai empire.

Meanwhile, Leo gets stuck in a forest, where he befriends a defective dragon and rescues a stuck-up elf princess that got her whole team killed.

Now, he needs to work to get himself and his team up to snuff, to be able to move back to the path that was supposed to be set for him, by one method or another.

And then he needs to put all his skills as a gamer and engineer to work to build his... fantasy empire

[Litrpg, significant and meaningful rules and options for both character and settlement growth, base-building/empire-building, portal fantasy, adventure, intelligent MC, no sex, no harem, some slice-of-life and found family.]