They need a sequel to the OVA focusing on Parn Again

I was disappointed with the tv show and the movies, parns kinda of only a side character in the show and not at all in the movies, i think they should make another ova to see what he does as a free knight later on, as well as what happens between him and deedlit.
Is there any more story with him in the manga or is it all just what was in the ova?