Nice Nature ending up the MVP of this episode.

so to answer NN's question "Why?", one of the animators fukuda_keita tweeted about his conversation with his producer

P: lets have a NN eyecatch in her race outfit
K: Didn't we have her already in Season 2?
P: Yes, we did
K: hmmm....
K: her cheer outfit is technically a race outfit
P ....
K ....

• The next day *

P: I got permission from Cygames
K: well then

Translation from here.