Because this story had theme of animals, can author just give harem end? Well, author can twist a little bit about law having many wives.
Dunno, the plot seems force. This kind of plot, just remind me of shitty Nisekoi, where the story and progress are very clear and for the characters its very obvious that they like each other, but for the sake of other woman, the story ended with the other woman, for Nisekoi, it because of that pendant with key or whatever it is, I forgot that item.
For the entire manga, we barely had development between MC and Lanka (in a romance way), the one that connect them are their past. But it barely touch.
And clearly MC dan Hitomi know their feeling but author force them to separate.
Kinda sucks TBH.