Mei was raised by a free-spirited father and grew up without knowing the of her family. One day, my father sent me a letter saying, "I'm going to get married again, so go to my new family's house." Mei is nervous and heads for her new family ... At first, Mei couldn't hide her tension in the life of her new mother, Shizue, and her new sisters, Saki and Kokoa. However, while touching the of the family ... woman, the brightness gradually regained ...