Nozomu Mochitsuki 
Tearmoon Empire: Volume 11 [EPUB ebook] 

The fate of the Fire Clan resting on her shoulders, Mia heads off on the Matching of Steeds—a two-day race that will push her horsemanship skills to their limits. Her plan? To lose, of course! There’s no way she could best an Equestri in a horse race. That would be absurd. Except…the absolute faith of her comrades throws a wrench in that plan. While they all expect her to win, Mia’s faith in herself pales in comparison to theirs. She thus spends the race scheming to create the most favorable defeat! But will her splash-fights, horse-shaped bread, and friendly attitude be enough to win over her opponent?