I'm late but I'm here! Hi!
Demetrius: Either Valerius or Soren, I think. Valerius is another rich kid so bonding there, and Soren is just a bright guy that needs more buddies, lol.
Lucy/Amodeus: She’s one of his many best friends and he will spend as much time as possible with her, lol.
Kyousuke/Amodeus: He sounds like a great friend (or enemy) for Amodeus! Or he can argue with Penelope, a first year in his house, who is a bit of a bish.
Aroha/Zaros: This could be a fun pairing; he comes across as rude and mean but he’s just awkward and lonely.