Yuuko Konagai is a typical high school student who often comes across as shy and socially inept. This has resulted in her having average grades and a limited number of friends in her class. However, when she returns home after school, she finds comfort in the company of her three felines, Maa, Shi, and Ro. These extraordinary cats possess human-like bodies, can converse fluently, and have distinct personalities. They eagerly await her return and offer her much-needed companionship and affection. The delightful anime series, Nyanko Days, revolves around the heartwarming story of Yuuko and her cats. They not only bring joy and happiness to her life but also help her in making new friends.