You Were Told to Farm, But You Became an Emperor?

Medieval times, warring knights, dragons, demons, gods, pirates, giant beasts...

Barbaric, ignorant, backward, numb, starving people everywhere, lives filled with suffering...

Damn it! I'll punch this era to pieces with one blow!!

Clearing land, farming, building bridges, paving roads, mining coal, digging ore!

Gaining experience, recruiting apostles, forging an army!

Mass producing troops! Overwhelming force!

Quack! My steel torrent is invincible!

Romain: "I am your destiny! All of you, kneel before me!"

So, as you were farming, how did you end up establishing a vast empire and becoming its emperor?