And so I became an umamusume— no, acquired the very body of Tachyon herself. Thus I had no choice but to act as her body double until she comes back.

Observe, the state of my legs post-training. Check it thoroughly and await my return.

...hm? Trainer-kun? Is there something wrong? Hey?

You'd better do your best job filling in for me until I return.

Oh, right, I've sent you some proof to your device, of me doing my training properly.

Aha—!

Smartphone

There were lots of begging for the nose-stuffed tissues afterwards, but he firmly refused with all his might. The End