To Your Eternity is one of the best manga I have read this year.
Story: The manga follows a mysterious immortal being named Fushi, sent to the Earth with no emotions nor identity. Fushi is able to take the shape of those around that leave a strong impression on him. Starting as a sphere, he takes the form of a rock, then a dying wolf. As a wolf, Fushi meets a boy living alone.
Art: Although the art isn't like "OMG SO AMAZING 😍" it matches the story and I like that.
Characters: Fushi character development is amazing. He goes from a lifeless doll to a sweet kid. I am not going to talk about the other characters because I'd have to spoil a lot. But I will warn you, don't get too attached to them (spoilers) they either die or separate from Fushi.
Overall: 4.5/5 stars