Yaoi

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]”