Another World: the Last Dragon

[Western fantasy background + original flavor + invincibility + pretending to be a pig and eating the tiger + system + fake natives] "I never use force to overwhelm others unless..." "You discovered my true identity!" "I could have overlooked this tiny world through my fingertips, but now, I want to change my way of living..." ... This is a world where brave men from another world are raging, and the pure-blooded dragons, who were originally the most powerful species, have been wiped out... An indigenous dragon who was supposed to be on the road to revenge accepted his memory after killing the time traveler who tried to take away his body. What new and wonderful life will an indigenous dragon with modern memory have in a different world? A crown made of blood? Or ordinary farming life in another world? It's all there...