Nanako Kuroi, known as Nyamo by her students, is a supporting character in the anime series 'Lucky☆Star.' She is a young, easygoing, and sometimes quirky homeroom teacher of Konata Izumi's class. Nanako often struggles with adult responsibilities and is depicted as a friendly mentor who shares a close relationship with her students, especially Konata. Her laid-back attitude and relatable problems add humor and warmth to the series, making her a memorable presence in the school setting.