Re:Zero Kara Hajimeru Isekai Seikatsu - Arc 5 – Chapter 63, “The Passion of Liliana Masquerade”

Li Xuan traveled through the world of immortality and opened the apprentice system, and both apprentices and apprentices could be rewarded for upgrading.

【Ding! Accepting apprentice Qin Yue, reward you: Innate Divine Power]

【Ding! Accept the apprentice Zhao Tian, ​​reward you: call the wind and call the rain]

【Ding! Apprentice upgrade, reward you: space shuttle]

….

Li Xuan, who accepted a bunch of apprentices, evolved infinitely in seclusion.

Ten years later, the Devil Emperor invaded and wanted to sacrifice the whole world, but no one could stop it. The disciples watched the world fall into despair in pain.

At this time, Li Xuan appeared and slashed a sword against the Demon Emperor under the watchful eyes of the public.

Boom!

The sky fell apart, the invincible Demon Emperor fell on the spot, and the entire dark world was swept away by a sword.

The disciples were horrified. It turned out that the strongest person in the world was actually the master who had been in seclusion for ten years.

- Description from novelbuddy

If the Red Dragon's head could pour out half a skull's worth of magma, the world would then witness the rise of the most enlightened monarch—the Red Dragon Book.David closed the book, a puff of Dragon Breath turned it to ash, and he whipped himself up a bottle of Fiendfire Elixir.To hell with bloody rationality.I just want to do as I please!This is the story of a Red Dragon rampaging through an alternate world, constantly rewarding itself by embodying the Seven Deadly Sins.

Saintess wants to turn me into a sword spirit; the master wants me to be a rebel disciple; the blindfolded sword fairy senior sister wants to make me her slave; the fox from Qingqiu harbors ill intentions; the little dragon girl always drools over me; the princess wants to keep me in the deep palace...All I want is to cultivate immortality, so why do they always have designs on me!? Many years later, someone asks Lu Jin'an what kind of Dao heart supported him to get this far? Lu Jin'an glances at his charming and alluring wives and sighs faintly：“I just wanted freedom.”

With the Proficiency System, Jiang Shu can shuttle between two realms!He learns top-tier martial arts in one realm and brings it back to the other realm of modern society.“Black Tiger Heart-picking! Fierce Tiger Jumping! White Tiger Carrying Corpse!”What will happen when all species have unlocked their gene locks?The bear-type Sixth Rank Mutant Beast roared angrily. Jiang Shu actually seized one of the bear's legs with a single hand and forcefully slammed it to the ground!What challenges will occur once martial arts meet modern technologies?“What the hell! God, he can fly!”, the pilot exclaimed in shock.Martial Arts versus Genes!