Roosydesu

To Your Eternity is one of the best manga's I've read. If you enjoyed the author's previous work Koe no Katachi, you'll be sure to like this too. Yoshitoki Oima has really outdone herself with this one. The art is top-notch and the story and character building is a sight to behold. If you take the time to sit down for the first chapter, you won't be able to resist reading the rest anymore. 

The main character, as the description says, is an immortal who can gain the body of any object or dead human/animal it has touched or had a sort of bond with. You follow his/her story throughout this manga as he learns about the world, about him/herself and about the meaning of life and death.

I can't hold back my praise for this work, it is gorgeous and deserves nothing less.