My name is Hitoshi Chiyoda. I'm a second-year student at this academy and a member of the science club.

Because I'm timid, the violent, petite "Miya Shinozuka" from my class targeted me, and I've been enduring days of being harassed and bullied by her one way or another.

So, I decided to take revenge on Shinozuka using an item I created through my research. I'll make her fall in love with the old P.E. teacher.

On the day of the execution, I called Shinozuka to the science room as planned... But before I knew it, I was pushed down by Shinozuka––.