>>1791538
As I have already written, Uma Musume is different from other games. It is characterizing with permission obtained from the rights holders.

FGO characters are personifications of historical figures and gods, but there are no image rights for the deceased.
Even if a relative of Nightingale protests, there would be no legal enforcement as they are not the direct individual involved.

Moreover, it is not illegal if the character is deleted or changed.
Please review Article 8 of the Umamusume terms of use. Players are engaging in the game with that agreement, so changes to the game content are legal.

In any case, there is no problem as long as we follow the guidelines. As gentlemen and trainers, let's love our Uma Musume.
The eroticism that can be derived from clothing is also very good. For example, like Haruurara's bloomers...