After Confessing to Senior Oikawa

[Starting at 1,000 follows, planting a flag (evil grin)] Blurb: As a student at Aoba Johsai, a school famous for its university admission rate, my top priority is getting into a good university. Dating? Not happening. Men will only hurt my grades. Then one day, I lost a game of truth or dare with my friends. My punishment was to stop a random boy passing by at the school gate and confess to him. How hard could that be? I deliberately picked a time when no one would be passing through the gate, but then I found a handsome brown-haired boy standing there, apparently waiting for someone. It wasn't quite what I'd planned, but no big deal. Everything was under control. All I had to do was confess and get rejected to complete the punishment. I said blandly, "Oikawa-senpai, please go out with me." He smiled and answered in an instant, "Sure." Me: ...??? Things went a little wrong, but no big deal. Everything was still under control. I decided to break up with this boyfriend who only distracted me from studying. Unfortunately, every time I brought up breaking up, he thought I was joking. The next day, he'd still come looking for me and ask me to watch him practice. So I decided to go big. But just as I was plotting to give him a dramatic breakup, that guy who always wore a frivolous smile suddenly pinned me in a corner with his body. He leaned close to my ear and chuckled softly before saying: "Nao, you're always trying to leave me. That's really cruel... If I hide you away so you can only see me, would you stop wanting to run away?" ...Oh no. This is starting to become a much bigger problem! Reader's Guide: 1. I'll revise the blurb later, but the main premise probably won't change. 2. Pairing is Tōru Oikawa, one-on-one. The heroine is often a menace. Probably a romantic comedy? 3. The main story is in third person. 4. Also known as: My Girlfriend Wants to Break Up with Me Every Day; The Ultimate Showdown Between Two Dogs; Oikawa's Humiliation Chronicles, Even Iwa-chan Says It's Satisfying! (not really) 5. Match results will be changed, and Aoba Johsai will make it to nationals. Theme: Treasure your youth