Kim Sae-Jin

Description
Kim Sae-Jin is the protagonist of "A Monster Who Levels Up"

History
(Please put info here im already at chap 126 all of my edits will start from there).

Kim Sae-Jin's mother, Jin Soh-Jung - and his father, Kim Jeh-Hyuk.

Both of them were originally Knights of Eden.

For some unknown reason, his mother got into an argument with several high ranking officials of Eden, which promptly got her fired from her post. As written by Eden, the records stated it was her 'rebellious streak' to blame.

Whatever the case may have been, after leaving Eden, she changed her job to that of a Mercenary and killed many non-human races.

Then, on a certain day. After operating as one of the finest A-ranked Mercenaries for some time, she went off on a particular mission to hunt down Vampires, as she would have usually. During the mission, though - she ended up encountering the offshoot of the Vampire Race, 'Nosferatu'.

At first, she did try to kill all of them. But then, she was won over by their persuasion - according to Eden, being deceived - and not only did she not kill them, but she even began taking care of many matters for them on her own volition.

In the midst of doing all this, she became pregnant with Sae-Jin. She deliberated on what to do, and in the end, chose to stop what she had been doing until now and returned to Eden's fold, in order to request for their protection. As a result of siding with the Nosferatus, she ended up becoming the target for the Vampires' hate.

Unfortunately, Eden's protection was negligent at best, and led her to die at the hands of the Bathory Vampires.

His father, Kim Jeh-Hyuk, was a third-generation 'Mah-in'.

Well over 70 years ago, when the world's governments were still trying fruitlessly to conceal the existence of Fissures, Kim Jeh-Hyuk's grandfather stepped onto this planet.

He longed to attain pure humanity. And so, he settled down peacefully, fell in love with a human woman, and lived a long and rather fulfilling life, quite unlike most of his peers who were quite a bit more keen on roaming the earth and causing all sorts of mayhem in their wake.

And two generations later, Kim Jeh-Hyuk was born. During his teenage years, he placed all his trust in his 'Trait' and acted like a low-rent thug, but he met Jin Soh-Jung, which became the catalyst to turn his life around.

To be with her, he worked hard to become stronger and entered Eden. And he even created with her a child that kinda resembled himself. But thanks to the Bathorys' scheming, he died without being able to take a look at the face of his own son.

Trivia

 * His first Woman is Yu Sae-Jung - Ch:93.