It's still in progress, but...
To Your Eternity - God casts an orb of light to earth. A complete blank slate, whose purpose is to experience anything it comes into contact with. Naturally, the very first thing whose form it takes on is a rock. It's a pretty chill rock for awhile, until a dying domesticated wolf-dog collapses next to it. It's a bit of an idiotic creature, and frequently dies, because it doesn't know how to feed itself, but it always regenerates, because by its very nature, it's an immortal entity. Making its way through the frozen tundra, it comes upon the dog's former master, an endlessly optimistic but alone young man who's making it work by surviving on his own.

Together, the two resolve to experience all sorts of experiences, to find other people and a less desolate, hostile world, and their journey begins.

In the vein of Kino's Journey, Mushishi, and Violet Evergarden, it's episodic while maintaining a consistent through-line. Its first three episodes have been absolutely wonderful to behold, with beautifully rendered backgrounds, lively and sympathetic characters, and explorations of what it means to be an immortal creature, gradually figuring out what life is all about.
[Currently Airing on Crunchyroll]