I Am a Devil, Summoned by the Weakest School Beauty

Another world has arrived, monsters are raging, and everyone has changed their profession. Li Xiao traveled through time and became a demon, obtained the Book of Black Magic, and became the strongest being above all else. .... I, Su Qiaoqiao, the school beauty of Jinghai High School. Today is the day when you turn 18 and change jobs. Others will either change jobs to become a magic swordsman or a magician of light. What about me? I changed my profession to become the weakest summoner. All summoners can only summon the lowest level of monsters! I'm desperate. Then I summoned an ordinary human named Li Xiao. I am even more desperate. Until one day, Li Xiao blocked the ultimate move of the world's strongest paladin with one finger. I am confused, and everyone around the world is confused. Li Xiao used another move, a magic with a large range comparable to nuclear power, and killed the ancient dragon king in seconds. Then Li Xiao told me, this is just a flat? I was dumbfounded, and so were all the humans around the world, and all the monsters were frightened! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.