Otonari wa Kedamono Inui-kun.

Kanae is heartbroken after her boyfriend cheats on her with her coworker. Then, who should appear before her but her old dog...? Wait, no, it's her neighbor, Inui. A hair stylist on temporary leave, Kanae's been avoiding people all this time, but Inui is so sweet and good-natured, the two quickly become regular dinner buddies. When she gently washes his hair and ruffles those fluffy locks, he says he can't help but want to comfort her when she looks so vulnerable... The pair begin to slip into an adult relationship, but Kanae doesn't yet know his secret... Is this just pity? Or is it something else?