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.

Early the next day Jinwoon and Sung Hoon first went to see Kuno. Jinwoon wanted to know why Hyung Woo had written the information about the mine near the end of the journal. It didn't take them too long to find him.

"Elder Kuno, I was wondering if you can help us. I've read the journal and there was one thing that I found strange. At the end there was a chapter." Kuno looked at the page Jinwoon showed him. His face turned sad.

"I... I don't know either." Jinwoon and Sung Hoon could see that he wasn't telling the truth. "Please. Could you tell us? It might help us a great deal." Jinwoon looked at Kuno hoping that he would tell them. But the old man shook his head. "I... I... I really don't know."

Jinwoon was disappointed but he didn't confront Kuno. "I hope that before this ends, you are willing to tell us." Jinwoon indicated for Sung Hoon to follow him. The two left Kuno's hut. "I wonder why he can tell." Sung Hoon looked back.

The Mine