On a lovely spring day, Liones Yelistratova, a princess hailing from a tiny nation, enrolls in a specialized educational facility located in Hokkaido. The institution is overseen by ALCA, and its aim is to educate Logicalists, individuals who work towards maintaining world harmony. Liones is placed in Class S, which comprises of several unique classmates, such as Nina. Consequently, a delightful and vibrant daily schedule begins.