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Artist's commentary
Gracefully Calm Teio
I-It's not what you think, Teio...
I definitely, most emphatically did not umapyoi Nature or King or El or Rice or any of the gir—
Umapyoi /ɯmapʲoi/
1. Abbreviation of "Umapyoi Densetsu", one of the songs for the Umamusume franchise.
2. To dance or sing along with the Umapyoi Densetsu song.
3. [analogy from 1.] To fully finish a given Umamusume's training scenario (winning the URA finals with first place) in the Umamusume Pretty Derby game.
4. [analogy from 3.][euphemism] To "go all the way" with a given Umamusume. To achieve last (fourth) base.