Forgotten Tale of Jianghu - Chapter 7: brain-consuming parasite pill

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 –

If life could repeat itself, what would you do?Would you repeat your first life and stay a normal average joe? Perhaps your gaze will betray the life you’ve already lived, but you remain insignificant and unknown, stretching your neck up high to watch the furling clouds roll by?Or will you make the world your stage, stir up every cloud and wind under all the heavens, making the entire world your captive audience as you dance, making people’s hearts pound with your every move?Composing my own laws, establishing the order I desire…a human life is a measly ten decades, so why don’t I light the candle that is my life and set this world ablaze!!

The more he got to the Comprehensive world, Beiyuan Baiqiu originally thought it was just an ordinary Comprehensive daily world.

Who would have thought that after entering high school, unusual things would happen one after another, and I would awaken myself through the simulator.

Since then, Beiyuan Baiqiu has embarked on the road of being invincible.

[Demon Slayer, Campione!, No Game No Life, Problem Children are Coming from Another World…]

- Description from novelbuddy

Rainer, an amateur arcanist and college student, sought to create a new spell far surpassing the magic of the few he inherited from his grandfather. Yet the interference of an unknown event during the casting of his spell led him to be thrown through space and time.