Granblue Fantasy The Animation S2 - Episode 3 - Young Katalina Kicks Sweeps

A young Katalina easily showed why everyone expected her to become the Lord Commander of the academy during its selection tournament.

Katalina explained to Gran and Lyria how Vira became Lord Commander and she got to become a knight like she wanted. Katalina's wavering heart let Vira become partners with Luminiera. Supposedly, the connection has recently been broken, but there's also secret deals with the Albion Empire not to really let the Grandcypher escape unharmed.

Rosetta appeared like a game event to push Gran and Lyria into taking Katalina back with them. Rosetta really does flit about like rose petals in the wind.