One Piece: God of Space - Chapter 609 The Awakening Person

At 18, Alex Kain is whisked away to Eryndor, a game-like realm where he gains 'Skill Synthesis', a talent to fuse skills into godlike powers. Battling monsters and conquering dungeons, he builds a harem of strong women drawn to his might and charm. With the power to return to Earth bearing incredible resources, Alex faces a growing threat that endangers both worlds in this epic of adventure, romance, and ambition.

It’s a affair between a loyal dog servant and his master.

- Description from Novelupdates

As Orson read the novel written by the girlfriend who had left him, he gently remarked on how terrible the story was. But then, noticing a foul smell coming from the kitchen, he went to investigate. He realized there was some kind of gas leak. Already furious about being dumped, Orson became even angrier at the state of his kitchen, and in his rage, he hit the light switch with a powerful punch. Naturally, the explosion that followed killed him instantly, and Orson passed into the afterlife.After spending some time in limbo, he found himself reincarnated in an unfamiliar world. However, he quickly realized he had been reborn inside the cliché-filled novel written by his ex-girlfriend. As if that wasn’t enough, he had ended up in the body of Neonidas, a useless duke who was also the fiancé of the story's villainess.____There may be a bit too much swearing and slang in the first chapters, but it gets less afterwards.There will be no yuri, bl or ntr in Neonidas(MC) harem

Su Yun came to a comprehensive world that was about to collapse due to a mysterious recovery, but he didn’t panic at all.

Because, he can edit the stories of the two-dimensional girls and broadcast them publicly, and gain enough prestige by publicly executing the girls, and then he can…

So…

“Artoria, I am your previous life, King Arthur!” Su Yun, who was in the form of a dumb haired king, looked at Artoria, a foreign student with a bewildered face, and said valiantly.

“The evil spirit, that’s me, that’s you! Tokisaki Kusan!” Su Yun, who was transformed into the elf of time, stood in front of the stunned Tokisaki Kusan, with a seductive smile on his face.

“Balzebu, the power of thunder is my power, and my shape is also the power you should have. Now, try to take out the power that belongs to you from your body! It’s called – Dream One Heart!” After listening to General Thunder’s words, Balzeb subconsciously stretched his right hand to his chest.

Morgan Le Fay, Tamamo Mae, Miyamoto Musashi, Yae Kamiko…

One after another, mortal girls who had no power before, all showed their extraordinary side to the world under Su Yun’s bad taste.

So, people really think that they do have extraordinary power, and therefore, they have really gained extraordinary power.

The world has been completely changed because of this, and the mysterious history that human beings cannot overcome is rewritten!

- Description from novelbuddy