NamJaNun

Unlucky earthling Jinwoon has the worst luck ever. At work he is being terrorised by his boss. He has no love life and his 'family' life is a pain. His life sadly ends before he can change his ill-fate destiny.

Sung Hoon is the soon to be king of the Kingdom Namgyeong. He was raised by his single father in another kingdom. After his father's death he is brought to Namgyeong. 

After his death, Jinwoon transmigrates to an alternate universe where a mysterious being tells him to find the most powerful person on the planet. 

While Sung Hoon is told that Jinwoon is the only one who can help him save his planet. 
  
Trying to save the planet, Jinwoon (re)discovers things from his past and his new future.

How far do Jinwoon and Sung Hoon need to go to save their (new) world?

VERY VERY SLOW READ.

Tough Bride.

Sung Hoon looked at the coordination and saw that they had to walk around thirty minutes to get there. He looked around and couldn't find any transportation modes. "For a species that can destroy their planet like this, it's weird not to see a single vehicle."

Abhi spoke the words that Sung Hoon was thinking. "There is nothing to do, let's just walk." After five minutes they saw the old Pahudo running towards them. Sung Hoon was happy to see the old man safe and sound.

The old man stopped in front of them before giving a 90° bow. Sung Hoon and the others looked uncomfortable but they bowed back. The man looked shocked and bowed again. Sung Hoon and the others frowned and bowed again but the old man also bowed.

Napoleon Complex