phenomen a book

A high schooler, Kastille, who deems himself as a genius manipulator, is planning on creating his own kingdom. By manipulating the students to his will, he has nearly taken control of the entire school. Through his own skills and talents, he blackmails, coerces, extorts, and uses anyone and anything in order to get his goal in life: to be able to live without hardship after he graduates by receiving the fruit of the labor from the people under his control.