At 15 years old, Kusaraki Masao is just like any other average boy. He attends school, plays soccer, and yearns for a romantic relationship. Although he possesses a gentle and kind demeanor, he tends to be extremely introverted around girls.
Despite his amiable personality, Gorio (a nickname derived from his gorilla-like appearance) has unfortunately not found a romantic partner. Despite his best attempts, girls seemed to be unable to look beyond his physical appearance to see the compassion and kindness that lay within.