Dzzai's activites

I've been looking for a certain story. it is a yaoi fantasy harem I guess? which is the main character was reincarnated at a game or novel as a side character magician... The top were vampire, werewolf, a prince and a fye king .. so please if you have any idea... Please let me know thank you

Mukouda Tsuyoshi, summoned from modern Japan to a different world of sword and magic.He thought of w...

It's a yaoi ehemn a omega verse. The bottom is a middle aged man, he's pharmacist or a doctor (I don't know) who is a beta but suddenly turns into a omega one day. The top a younger dude an alpha and a part of a well known boy band group..... Their first meeting turn into something hot....

The story starts from a beta doctor the uke in the story (broken one I think). Then he met this popular alpha guy a part of a band I think.. then the really first time they met something snap inside them and they do the *thing* after that the alpha promised this beta that he will take the responsibility.

Then fast-forward this beta doctor discovered that he undergoes to a genetic mutation and became a Omega

I forgot about its tittle so please can someone give me the sauce

The story starts from a beta doctor the uke in the story (broken one I think). Then he met this popular alpha guy a part of a band I think.. then the really first time they met something snap inside them and they do the *thing* after that the alpha promised this beta that he will take the responsibility.

Then fast-forward this beta doctor discovered that he undergoes to a genetic mutation and became a Omega

I forgot about its tittle so please can someone give me the sauce

A black haired ( the top) sunbae who is rich and also famous in his university and a curly haired junior ( the uke ). They have a one nyt you know and it accidentally impregnate the uke (not a omegaverse I think the uke is hermaphrodite). Also in the end they got married and also they have 2 children a boy and a girl.. and it has a sad side story.