Nobody cares anymore, the animators, producers, not even Hideaki Sorachi.  Aww, it’s such a drag even the characters are airing their grievances.  Where do we go from here?
Maybe humans and kotatsu used to be one and the same.
¿No será que desde un princio los 
humanos y el kotatsu eran uno solo?
Vai ver humanos e kotatsu eram unidos.