Oikawa was an omega, Iwa-chan was a beta. Despite that they did the do and Oikawa became pregnant, tho its a rare thing to happen. Then they got married and they told the story to the other two and went to celenrate new years. I hope this helps
also Cause the chances of pregnancy between an Omega and Beta is pretty low...
People presumed (including Maki) that Iwa-chan is an Alpha cause he got Oikawa easily pregnant.
But Matsukawa knows that Iwa-chan is really a beta...
Iwa-chan asked Matsukawa to keep it a secret because now that he is married to Okaiwa, he must pretend to be an Alpha....(maybe in order to protect him and prevent people from unnecessarily marking Oikawa)
Look at this page : it says here that Iwa-chan will 4ever pretend to be an Alpha
http://www.mangago.me/read-manga/haikyu_dj_tanoshii_jogoku_wo_irodoru_nara/uu/haikyu_dj_tanoshii_jogoku_wo_irodoru_nara-chapter-1/30/
Also
So is iwa-chan really is the father of oikawa baby or it’s the other guy who is alpha and what’s tha reason why Marduk awa is keeping a secret that he is alpha?? This confuse me the most.
Iwa- chan is the father. As for the other thing, im not sure, it might be a lot of things
Oh ok as long as it’s iwa-chan child I’m in peace anyway thank you
I know it sounds weird but I didn’t get the story hahaha can someone explain it to me.. ╮(￣▽￣)╭