My OP Minion System in the Apocalypse - Chapter 248 Wonder

A master assassin transmigrates into an interstellar era.

Other players were responsible for competing in the e-sports arena, while he was responsible for stringing up and beating up the other players.

His sword was hidden during the peak of day, and he was a gentleman who arrived in a flash of light;
As a vanguard of the eternal night, he was the variable between life and death in the world.

“As you know, the Star League’s difficulty levels are arranged in this way:
Paradise < Simple < Normal < Difficult < Nightmare < Hell < [Tyron Odin]”

- Description from Novelupdates

In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls –

“I only want you, Theia. Always have always will and this shall never change. How could I ever want another when I possess the one I solely exist for?”“Phobos,” I call his name fondly a need to hug him and breathe in his calming scent surfaces.“I do not wish to treat you like you are made of glass because you aren't. Your body was made for me and it can handle everything I choose to give it. And this I will prove it to you.”“When?” I ask breathlessly as he ultimately turns around to meet my curious eyes. Golden rings outline his irises his beast announcing his presence and they stand as one before me. A wicked smile paints his face with a flash of canine displayed to me. A promise he gives that I will be ruthlessly devoured.“When I fuck you senseless.”~~~After years of excruciating loneliness, Phobos approached me. A frightening beast, my soulmate who emerged from within the bounds of a ruthless thundering storm. The male I yearned for. He caught me off guard and I was under the spell he cast through his ocean eyes. A spell I couldn't defeat and that very moment I knew I was in trouble. The second our eyes met I knew he would bring me endless heartache.We were childhood friends, him and I. Phobos the gentle and playful juvenile I grew up with and looked up to as a pup vanished and was replaced by a cold-hearted barbarian, he terrified me as he killed many with a blink of his eyes. No regret, no concern his beast often in control surging forward consuming his senses. They were equals.How can I connect with a beast like him? How could I make him call me his? How can I love my childhood friend who has become a merciless monster?

“Welcome to the Punishment Zone, scums.”

“Please tear the masks of pseudo-gods into pieces here.”

“However, you must remember—the time for slaughter takes place only after sunset.”

- Description from Novelupdates