Reborn as a Senior in High School, I Kicked Off the Scumbag and Became Number One in the School

In my previous life, I neglected my studies for a scumbag, gave up my place in a key university, and worked hard to support his studies. In the end, I was betrayed by him and my best friend, and I lived a life of inaction and regret. On the day I was reincarnated and returned to the third grade class of high school, the scumbag pretended to be friendly. I exposed his hypocrisy in public and cut him off. Put away your love brain, immerse yourself in studying, use your foresight to seize competition opportunities, and your grades have consistently ranked first in the school, astonishing all teachers and students. The aloof and taciturn number one academic student in my grade silently paid attention to me and helped me out in every possible way. He accompanied me to answer questions and helped me block out rumors. The scumbag who betrayed me and my best friend in my previous life caused my grades to plummet and my future to be ruined. Seeing me admitted to a top university with a god of academics by my side, I regretted it beyond words.