Mushoku Tensei: Jobless Reincarnation - Dog and cat

I wanna learn more about the frog. What the frog doin'?

Yes, those smiles on their faces, even as they swing and stab at each other with as much force as they can bring to bear.

Those grins say that they've never been more alive, that they've found their essence, and that this is the way things should be.