Restarting Life

When life hits the reset button, it seems like everything becomes smooth sailing... or not! How great would it be to be reborn after the college entrance exam? If not, going back to the first year of high school would be fine too. But what the hell is this? Reborn in the third year of high school? And, of all places, reborn in the exam hall. Folks, how do I solve this math problem? Urgent, waiting online! ………… (This book is also known as "Who Still Takes Exams After Rebirth?" and "The Author Still Can't Come Up With a Good Title After Rebirth.")