Pirates: The Revenge of the Family, Kill All the Tianlong People!

Novel Summary
When he woke up, Rono traveled to the world of pirates.
I thought I could live happily and peacefully.
But the appearance of Tianlong people broke this situation!
Rono, watching his parents being shot to death by Tianlong people!
Under extreme anger, Rono awakened the system and vowed to kill all the Tianlong people!
From then on, a [Extremely Evil One] who specialized in hunting Tianlong people was born!
Wherever Rono went, the Tianlong people shivered!
Admiral?
Two more and I will kill all of you rubbish!
Karp: The Evil One?
He is a monster created by the Tianlong people, and one day the Tianlong people will pay for it!
Roger: 【One Piece】?
Compared with [The Evil One], it’s nothing but a cloud!
Whitebeard: [The strongest man in the world]?
No, no, Rono is the strongest!
Rocks: In terms of killing Tianlong people, Rono is the first, I am second, everyone else is garbage!
– Description from readMTL