Tabenai no? Ookami-san.

Taro is sent to the forest alone. He's a sacrifice for the monstrous wolf, Uru. Upon seeing him, Uru declares Taro too small and too thin. The wolf feeds him, clothes him, and cares for him. Time passes and Taro finds himself wanting to be devoured by this giant wolf who gives him nothing but affection.
(Source: Seven Seas Entertainment)