This ova should be seen as a transition from season 2 to 3, as new characters are introduced there. They are simply expansion episodes. Otherwise, you will first wonder who the girl is.
Nothing happens in the area of the plot, you only learn minimal detail. The background will be noted in season 3, however.
In terms of content, the extremely average quality of this work has hardly changed. Both with the characters and their relationships.
It is remarkable how average this whole title is in general. He has just as many strengths as weaknesses and already looks perfectly balanced.
