Oukoku e Tsuzuku Michi - Chapter 11 – Hardle

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

(No Female MC + Ruthless + Infinite Style + MC is not a saint)“Are you tired of mediocrity? Do you crave power?If you want to break free from the ordinary and possess power that surpasses all beings, then join this game.”Ye Shuangluo was chosen by a mysterious game to become a reserve player. As a player, he must face opponents from other parallel dimensions and multiverses. Fortunately, Ye Shuangluo awakened his unique talent: “Achievements Master”. By accomplishing a series of achievements, he can obtain countless powerful skills and attributes.When the cross-server war begins, foreign players traverse the spacetime gate to his star. Ye Shuangluo stands above the sea of stars and strikes with a single slash. The unparalleled blade aura instantly annihilates all invading enemies. Facing the countless terrified enemies on the other side of the spacetime gate, Ye Shuangluo sighs and says leisurely:“I really just wanted to quietly rack up achievements, why did you have to force my hand?”

Qiao Yanzhou is a video gaming streamer.

Gu Zixing is a professional gamer.

Qiao Yanzhou is a big fan of Gu Zixing.

Gu Zixing is Qiao Yanzhou’s idol.

Qiao Yanzhou is a quiet fan.

Gu Zixing is a cool and charming man.

Qiao Yanzhou is a couch potato.

Gu Zixing is a world champion.

A ranked game brought the two together, and the chemistry between them takes an unexpected turn…..

Not long after:

Gu Zixing: Xiao-Qiao, am I still your idol?

Qiao Yanzhou: Yeah.

Gu Zixing: Can I kiss you then?

Qiao Yanzhou: Sorry, who did you say you were?

- Description from Novelupdates

In one moment, he was walking down the street with his little sister—In the next, he had traveled to the world of One Piece, carrying a system that could extract, record, and fuse genes to cultivate powerful lifeforms.Thus began a leisurely and carefree life in the most chaotic world imaginable.When bored, he’d snatch a bit of heavenly tribute meant for the Celestial Dragons.When curious, he’d raise a few cute kittens and bunnies just for fun.When restless, he’d wander through the territories of the most fearsome powers in the New World.Life is beautiful—so why bother taking anything seriously?