Uma Musume: Cinderella Gray - Vol. 21 Ch. 187 - I'm Your Opponent

[MangaDex]

 

[chanzy7]

Damn, she really be the hidden rival from all the way back then?

Also don't apologise for leaving her on the roof, explain how you did it! Did you jump off the roof? How the hell did you vanish!

 

[Rena_Andou]

Damn, she really be the hidden rival from all the way back then?

Also don't apologise for leaving her on the roof, explain how you did it! Did you jump off the roof? How the hell did you vanish!

I thought the same.
That's why i made a joke about her being a ghost / not real