System Wars: Here Comes the Heroes! - Chapter 14: Low Res Bird

Luo Zheng is at the bottom of the Luo Clan hierarchy, despite his family being the founders of a power refining technique that could instantly defeat any opponent.

One night, enraged by unfair treatment from a family steward, Luo Zheng burns the family records. In doing so, the hidden magic in the book engulfs him and Luo Zheng becomes a new skilled fighter. Fleeing his home and despicable clan, Luo Zheng must learn to harness his powers to rescue his younger sister while his own cousins are on his pursuit.

- Description from Novelupdates

When I opened my eyes, I found myself in a game where heroes and villains prevailed. I was told I would be granted one wish if I clear the game. The protagonist, who received a growth cheat that allows you to steal his stats by killing an opponent. He kills villains to grow up, but for some reason people mistake him for a “dark hero.” [Story-oriented]

Just when I got to know her, the hairy girl only wants to beat me up!Prim childhood sweetheart treads on me underfoot!Childhood friend turned sister suddenly demands I repay the kindness of upbringing?...Are all these twists of human nature, or the moral decay?Surrounded by young girls wielding knives, Shen Mo Dust trembles: 'Author, why do I only meet bad women?''What exactly are you not satisfied with, let's switch roles!'Jealous at having crafted the protagonist's peak of life with his own hands but without a single girl by his side, the author furiously slams the keyboard!(Spotting the little whips raised by the venerable readers, he picks up the keyboard again)The alternate titles of this book are 'They Shine Like Stars' and 'They Are Lonely Like Stars'.

Thanks to the Goddess, he was reincarnated into nobility!　That should have been great―― but the skill he got, 【Toxin Decomposition EX】 was simply too plain, and he was made fun of everyday at home……