To Your Eternity.
"Joan, I want you to do something for me. Remember me forever."
An orb came was placed in this world by a deity, to observe and change. When it comes to change, it's the unique characteristic for it can to object/thing/person through touch the first time. After that it's only allowed to change when it's surrounded to death, that living creature/person dying. It's reason for living? We don't know yet. It lives to for a same reason a person does to stimulate its curiosity,
experience, learn, and to grow.
When orb comes into this world, its first contact is a rock. So, for decades, maybe even centuries, it stays that way until a wolf dies on top of it. It was dying to a wound on its leg, the landscape of endless winter snow. The rock copy itself match-for-match, even the injury. Experiencing things for the first time ever pain, cold, fatigue, anguish, and fierceness of the world but like all living things, it moves forward. Eventually, find a single-hut with a white-haired boy that recognizes the wolf instantly, thus they being their companionship.
The boy has one goal, it's for him to continue moving forward to follow the footsteps of the villagers that went off without him. So they begin their journey of the boy and his wolf, Joan. Their joinery is faced with many hardships only to find that villagers didn't make paradise. They had died on the way there. Through the journey itself the white-haired boy got a leg injury himself, loosing motivation he decides going back to single-hut. It was their white hair boy passed, thus the cycle continues the boy take the form of the white hair boy...moving forward once more.
When it comes to the animation is superb, each detail eccentric and showing us so many emotions through characteristic of the faces. When you see them in pain, you can feel their pain. This anime is a journey, an experience, and wonders of growing through pains and joys of life.
-Spoilers-
It was around the third arc island arc where the story seemed to drag itself out, overstaying its welcome. Not really caring for the cast of kids on the island, myself. That alone was enough to bring the show to mediocre.