because to help your sister get back the 300 million stolen money, you use the clone acc to flirt and fall in love with the guy,it's Rin, who cheated on your sisters .you pretend to be sick and borrow that he 300 millions, he does not hesitate to transfer money to you

Rin: "please don't leave me...You were afraid that I would be worried and hurt, so you blocked me? Don't worry I have a lot of money!!he came to your school and hugged you and sobbed