Hachi

Hachi is the younger brother of the main character Haru, separated for years before fate brought them back into each other's lives. Now living under the loving care of pet shop employee Nana Oshimori, Hachi grew up in a nurturing home environment that shaped his carefree and affectionate personality—a stark contrast to Haru's more cautious nature. Sharing his days with a fellow cat named Roku, Hachi plays a vital role in portraying the heartwarming bonds and gentle interactions between cats in the story.