The Trainer joined Tracen Academy with noble intentions: to guide talented Uma Musume, develop their potential, and hopefully build a respectable career.

A perfectly reasonable goal.

Unfortunately, the Trainer chose Agnes Tachyon.

What began as a professional Trainer-trainee relationship quickly became a years-long battle against experimental compounds, suspicious laboratory equipment, questionable safety standards, and Tachyon's increasingly enthusiastic definition of "research."

The Trainer survived.

Somehow.

Years later, despite having developed enough survival instincts to recognize a dangerous experiment from across the room, the Trainer still finds himself being dragged into Tachyon's laboratory whenever she needs a "volunteer."

At this point, leaving should be easy.

Unfortunately, Tachyon has other plans.

A Tachyon trainer? Looks like you’ve made a "fast" mistake