But here you have heats as well, it might be not omegaverse, but it’s closer to be one than being only a mpreg (my opinion)
They have heats, because they're part Beast. Just like cats and dogs, so it's normal that they have heats as well.
* Just like other Furry stories, they can experience heats. But some of them, males can't get pregnant. So in that case it's neither MPREG nor Omegaverse. Omegaverse is where everyone can get pregnant. Including 2 females together
That’s it !
All this time I thought this is Omegaverse , because of the Tags. But Kedamono Arashi series is actually just MPREG