The protagonist is killed by his parent. After dying he gets reincarnated with an upgrade system that upgrades anything related to him. To get his revenge on his 'parents' he upgrades the talent that killed him, into something with limitless growth rate.
My reasons for why you shouldn't read the story.I'm not good at writing so don't bother about this story if you want top quality novel.English is my second languageI post the moment i finish the storyI write whatever comes to my mind when i write a chapter.
I have posted this story in web novel