The hare-shaped hole

Hertle and Bertle were always together, always a pair, even though one was a turtle and one was a hare. They were best buddies until unexpectedly, it ends. When Hertle disappears for good, Bertle can only see a Hertle-shaped hole were his friend should be. No amount of pleading or yelling makes it go away. Then, he meets Gerda the kind bear, who explains the hole doesn't go away, but Bertle can fill it with memories of Hertle and feel a little better.