I, the Strongest Devil, Was Summoned by the School Beauty!

Another world has arrived, and monsters are raging. Su Chen traveled through time and became a demon, obtained the Book of Black Magic, and became an immortal existence. ... I, Tan Xiaoxiao, am the school belle of Jinghai High School. Today is the day of awakening at the age of eighteen. Others will either awaken as magic swordsmen or light magicians. What about me? I am definitely the weakest summoner, the most successful summoner in history, and I am still summoning goblins every day. I'm desperate. Then I summoned an ordinary human named Su Chen. I am even more desperate. Until one day, Su Chen used one finger to deflect the ultimate move of the world's strongest awakened person. I was confused, and so were hundreds of millions of living things around the world. Su Chen used another magic move with a large range and comparable to nuclear power to kill the Demon King instantly. Then Su Chen told me, this is just a flat? I was dumbfounded, the whole world was dumbfounded, and all the monsters were scared dumb! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.