[Anime] + [Uma Musume Pretty Derby] + [Yandere] + [Uma Musume Pretty Derby in Another World] + [Anti-Yandere] + [Slice of Life] + [Mystery]

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The story is about a trainer who wants to quit his job due to work pressure and the relationship with the female racehorses. Many of the female racehorses immediately try to stop him from leaving, but he ultimately chooses to leave, accompanying a friend to China, where he stays for five years.

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However, when the trainer returned five years later, the racehorse girls had completely become yanderes, staying by his side and not allowing him to leave his sight. During this time, he gathered some people for the anti-yandere organization, wanting to suppress or resolve these yanderes. He had to find the creator of the yandere flower while also being wary of his own yandere personality, "Ai," coming to cause trouble.

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The yandere crisis was finally contained, but it wasn't a pleasant or long-lasting situation. In the third personality, the time-based Uma Musume world, the Uma Musume sensed the trainers in the main world and went there together. The time-based personality told everyone about this, making it both an ordinary daily routine and a very serious crisis.

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After a long period of companionship with the two world's racehorse girls, the trainer finally adapted to their habits. His only remaining task was to find and resolve the creator of the Crazy Flower. Finally, he returned to China.