Tomodachi no Imouto ga Ore ni Dake Uzai - Volume 4, Chapter 1: My friend’s little sister is only clever towards me

Waking up inside the ruins of an orphanage, Alexander finds himself chained and sold to slavery.

A modern metallurgist, trapped in ancient times, watch as he tries to play with the cards fate dealt him.

He will make plate armor, invent paper, build roads, teach governance and many more, as he tries to carve a place for himself.

But how can such things not attract jealous eyes?

The naval superpower- Cantagena,

The unstoppable army of- Exolas,

The superpower of the east- Adhania,

The mercantile confederation- Sybarsis,

The religious fanatics- Iyizarid,

And the ever-present- Barbarians of the Barren Forrest,

All want something from each other.

In this ocean of sharks, follow a small carp as it struggles to leap through the dragon gate and establish a dynasty to outlast them all.

Kaka: Huang Kai was the greatest hero of the Istanbul night, although he played only a little.Ancelotti: Huang Kai is a super genius, it's just too bad his body isn’t quite up to par.Maldini: Huang Kai is the most important player on the team. I suggest the club re-sign him for another five years.Barcelona: To sign Huang Kaiwen, we decided to demonstrate our sincerity by signing his cousin with an annual salary of one million euros. The veterinarians in Milan are no good; he won't get injured with us in Barcelona.Bayern Munich: We have the Divine Doctor!Huang Kaiwen, the biggest slacker in soccer.From slacking off every day, forced to make sporadic appearances, he ultimately was forced to become the team's savior.Football, anything is possible!

I banished the protagonist.

Shit. If only I had transmigrated a short while before.