If you think hard about it... The yaks in this world build large harems... But they have that big size difference...
And the mothers use their teeth to rip off the baby's penis....
This feels like hentai tags that I don't want to look up.
3 things i learned from this manga won't leave my mind: That Yak thing, that I just learned and that is too terrifying to mention, what koalas feed their children and Yena, one of the cutest girls in this manga, having a pseudo-slong. The last thing is also the saddest. Know about it since the first time it was mentioned and still can't get over it.