Sound! Euphonium, S.3, Ep.8 - Melancholy Ostinato (Patreon)

I think Mayu really knows her abilities and I like to believe her intentions were what Kumiko believed no matter what Kanade thought about her.

The auditions were an upset. Poor Kanade didn't make the ensemble and Kumiko lost to Mayu on the soli section with Reina.

While Kumiko really wanted to be a part of the soli section, I almost feel like that conversation with Reina may have shook her a bit. She works very hard to stay practiced and does her best to be an amazing president...I feel like she had to faulter somewhere.

That doesn't lessen her position in band though.