The young man fought tigers in the mountains, captured eagles in the canyon, and traded blows with a dragon atop the highest peak...
He thought his fists had made him invincible, until the day he fought a passing horse girl and learned that there was always a higher sky, and someone stronger than him... even if she was a horse...
Following in the footsteps of that girl, he arrived at Tracen Academy and picked up the flyer:
[Trainer Wanted. Requirements: Male, strong physique, excellent stamina]
"...Wait for me, ███. I will definitely conquer you!"
This is the trainer's journey of the strongest boxer on Earth, who never loses in a one-on-one fight!