![Umamusume: Pretty Derby](https://i0.wp.com/tvshowfaqs.com/wp-content/uploads/2024/05/9TVHxWbWAHiIQjzGTx1vXi95r2X.jpg?resize=185%2C278&ssl=1)
In the end of Rama VI, the government announced that there would be a marriage certificate supporting the monogamy campaign. Only one wife would be the legal wife with rights to all the assets. Four women married to the same man start a war against each other to try to be the legal wife.