They missed out on each other during high school because of a misunderstanding. After graduating from college, they went back to their high school and... more>> became teachers. After seven years, he didn’t recognize she was actually that girl. This is a story between a boring and impassive PE teacher and a scheming yet gentle Math teacher. Everything had changed after they met. Could they reignite their long-lost affection for each other again? At the same time, the secret in their high school time also began to be unveiled... <<less

He knows her secret. She knows his secret too. He is the coolest guy in school. She is the curve wrecker of class. They make a deal in exchange to keep each other's secret. They should be strangers after that promise. But he offers to help her confess to her crush at the same time. Is that true? Is he just teasing her? Or...?... more>>

Official English Translation: <<less