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I was a fast runner from a young age, and I was recommended by the track and field team, so I was expected to do well in the team. I recently started dating Suzu-chan, a girl from the same track and field team, and things were going smoothly... However, my senior didn't like me, and he took notice of me and started bullying me. I ended up accepting the devil's deal that my senior made to me because of the bullying, and I ended up losing my most precious Suzu-chan...