Hp: Slytherin Detective Miss She Is Also in Business

[Hp➕Group pet➕Business➕Investigation] [cp: Diary Tom, family love➕love➕appointment in past life] Olise Riddle, an anonymous business tycoon who is prospering in London, a rising star who never fails to compete in mathematics competitions, a talented girl with a bright future who cannot sleep, was suddenly visited by a diary when she was nine years old. "When you turn eighteen, I will kill you." This is too uneconomical, Oris thought, and it seemed like he didn't really want to kill him. How to conquer the blue ocean market in the magic world? First, he used gold galleons and pound sterling arbitrage trading, and then took down the Slytherin leader, started a business from learning materials, and pulled the whole school into trouble. Until—— "I'll pay you double the amount the person who asked you to kill me will pay you. Do you want to do it with me?" Olise pointed at the diary with her sword, and the diary knelt down on one knee. "As you command, I have forgotten the past king."