Miruto

This is how I would translate it from its original Japanese (pardon for the simple, lack of proper cleaning and rudimentary font choices. I work on phone) I'll walk you through my thought process: リピパワなりけりの精神: "The repeat-power-so-it-goes spirit" It comes from the proverb as palmer has pointed out on the middle bubble (継続は力なり) which means "Perseverance is power". Or in this case, i translated (or localized) it to similar proverb, "consistency is the key" to match its original context. So how did it become "endless-reps hustle"? One thing i do know that Daitaku Helios speaks a lot of slang words, and Uma Musume is a very gym-y universe. I assume she would use a lot of hustle-energy slang word/gymbros speak, with reps and all that. And so i decide to translate "リピパワーなりきり" (ripipawa/repeat power flare) as endless reps-hustle. There's a lot of more thought process to dissect and it would be not enough to put it all in one post. Also, how come can the localizer messed up a simple *ウェーイ* (we-i) to no cap? It literally means Yay/wei! (Depends on the interpretation)