A natural beauty with a bright smile, Mitsuki Kamiya, has finally let her lesbian senses blossom! The new housekeeper who started working at the Arimura household is liked and Ke'ai by the mistress. However, Yuu, a senior housekeeper who has worked there for a long time, doesn't like it and looks at her with jealousy. One day, Yu tells her that she hasn't cleaned the floor properly, and she is forced to Yuu with a deep French kiss and persistent nipple play, and she falls into Yu's insidious lesbian training...