Usagi to Kainushi-san

This is a story about a certain happy rabbit.

"Rabbits": A race of people with fluffy ears.
Because their intelligence is limited and they can only give birth to females of their kind, they are mandated to be put under human control for use as either manual labor or as cherished pets.

A lone rabbit named Shiro became a companion for a boy with blond hair, and he was shining in the reflection in her eyes.
She wants to spend her happy days with him forever. That was the meaning of happiness for her.

(Source: Melonbooks, translated)