Kylin System: I Am Dragon King

*As the son-in-law he was almost beaten to death on the street by the gang leader, but unexpectedly obtained a perverted system from the garbage heap!
"Hello, master. I am the super 'Qilin' System" 
"System activated." 
Analysis of fusion program. . . 
Beginning recognition and integration. . . " 
However, what the hell is this floating beauty in front of me?! 
From now on, he walk on the path to the legendary King.
After many years, many people asked about how he was...
He was the a genius with hidden abilities.
He was an all-around excellent student.
He was the great son-in-law.
He was the tyrant who almost own half about this world.
He was the father who willing to cost everything to save his baby.
He was the underworld king who called the Dragon King!