Responses
Nope, acording to the order of the events of the manga, sensei got fired and some girl gossiped that sensei had a wife and a son, Koutaro left the school and meet his omega friend for the first time, Koutaro got pregnant and omega friend informed him he had a boyfriend not a husband, besides, both babys have straight hair unlike sensei or the omega mom, so real daddy must have straight hair ヾ(❀╹◡╹)ノ~.
Nah, I start to wonder who is Koutaro friends husband, I mean who is the papa of those three children? They never show it, and it seems like he has someone. Just look how the child turns really alike, with the same light wavy black hair. Bet the papa is the same guy too