At your school you were one of the most popular girls there could be for too many reasons (If you are a girl, if you are a boy you were one of the most popular boys)

Everything in your life was going quite well until a new student entered your school, Junko Enoshima...a popular girl with too many luxuries and money

They quickly became enemies and a great competition was born between the two of you

Months passed like this until they ended up in a fight

Junko: "¡It was his fault!"