Toaru Majutsu no Index: New Testament - Volume 1, Chapter 3: A Slight Margin and an Omen That Connects to the Next. Girl.

He is an undead who is devoid of all humanity, he is the one and only supreme overlord, he is a man who has severe mysophobia.

When Fang Zheng opened his eyes, he was surprised to find himself reborn in a fantasy world of magic, dragons, knights, and princesses. Not only that, but even the game system that Fang Zheng had designed before also followed him into this world. Then, his next step would be to traverse thousands of plains, gain endless strength, become a brave hero, defeat the devil, marry the princess, reach the apex in life… wait, wait, wait, before all that, why was he reborn as someone who everyone called a cultist?

Transmigrating to the disciples of the Demon Sect, and relying on the skill modifier to become a giant of the Demon Dao.

[Detected the technique “Blood Nerve”, relying on devouring blood to practice]

[Side effects: easily affected by the spirit contained in the blood, becoming bloodthirsty, bloodthirsty, mad, and even brain dead]

[Please wait a moment, the system is being modified…]

[Ding! The modification is complete, and the side effects are cancelled]

- Description from novelbuddy

A once-opportunistic boy is reborn into a world of his dreams, equipped with a strong system. And he can do anything he ever dreams of.Beautiful woman? YesS*x? YesYuri? NONTR? NOSo come and enjoy the novel I write for fun.PS: This novel is fantasy and has nothing to do with the real world.