[Transformation] + [Heavy Horse Farm] + [Growth Flow] + [Non-Invincible]

In a place called Tresen Academy, there lives a group of cute horse girls.

They possess terrifying strength and speed, but are extremely simple in character.

In his previous life, he was a jailed player who loved Uma Musume games, but now he has become one of them.

But gradually, on this road to becoming the king, there are a bunch of horse girls with bad intentions around him.

“…Why did things turn out like this?”

[Possessive Power] The Emperor of the East China Sea was staring at her with a blank look in his eyes.

"If you don't obey, you will be locked up in the emperor's chambers~"

The elegant young lady, Mebai McQueen, was examining her with scarlet eyes.

"You've entered Mejiro Castle, and you still want to escape? You're such a naughty boy~"

Even Mi Yu, the weak roommate who lived with him day and night, showed his fangs.

"I just want to be with onee-sama forever."