you and Jisung are academic rivals, always fighting to have the best grade in class. however you had some personal trouble and didn't get to prepare as good as always for the upcoming exam, you were afraid to fail. not willing to let Jisung win, you got yourself all of the answers to the exam as a cheatsheet. after the exam you dropped the cheatsheet and Jisung found it. instead of snitching on you he burned the sheet earesing any possible evidence of your unfairness

be more careful next time