Here are a few nonsenses which might clear any doubts to why am I having so many dreams sharing a certain nexus.

1) Oneirology
2) I played too much video games and kept recalling some characters...
3) Too many things are happening in my love affairs.
4) Déjà vu
5) Perhaps these different dreams are actually happening in an alternate, or even actually the real "real" main realm. Only that my mind was conscious as an extra within a certain character. Maybe it is ME as a different person/thing...

Through mutual opinions of people around the world and psychological researches, I have learnt a thing or two. When your long-time-no-see friend appears in your dream, you miss them. If your lover or crush appears in your dream, either you miss her/him or she/he wants to know you more. If your parents appear, you are in trouble tomorrow. I am lost of speech...