@WEBNOVEL_OFFICIAL
I just want to bring this to your attention. The story, The Invincible "Fixed Damage" Skill by System_LookingGuy, is a plagiarized copy of the translation of the Japanese light novel, My Lover Was Stolen, And I Was Kicked Out Of The Hero’s Party, But I Awakened To The EX Skill “Fixed Damage” And Became Invincible. Now, Let’s Begin Some Revenge.
This is the link to the story on Webnovel: https://www.webnovel.com/book/the-invincible-%22fixed-damage%22-skill_16619613805590705
This is the original Japanese light novel:
And its original webnovel: https://ncode.syosetu.com/n3987fe/
If you require a translation, here's an English summary on Novel Updates: https://www.novelupdates.com/series/my-lover-was-stolen-and-i-was-kicked-out-of-the-heros-party-but-i-awakened-to-the-ex-skill-fixed-damage-and-became-invincible-now-lets-begin-some-revenge/
I am not the original author of the story, but you can probably imagine the fallout if Futabasha (the publisher of this story) finds out about this.