Mamoru-san no Yuuutsu
The Melancholy of Mamoru·護さんの憂鬱
Sakagami Mamoru is an elementary school security guard who is close to his dog, Haru. A high school student named Ayukawa Kyougo frequently approaches him, acting in a teasing and bold manner. Kyougo claims he will make Mamoru love him more than the dog. Mamoru remains skeptical, believing that human emotions are not as lasting as those of animals.