In the opening in episode 22, a girl is spanked by man,i do not the story at all,but i guess SALIA is punished for her misbehavior.
An enWP's list might be still helpful to know more...
PS.
And we can watch this episode/movie on...
Cross Ange: Tenshi to Ryuu no Rondo 22 (Raw) 投稿者 jjigokushoujo
, and gogoanime,