Mei was raised by a free-spirited father and grew up without knowing the love of her family. - One day, she receives a letter from her father saying, ``I have decided to remarry, so please go and live with your new family.'' - Mei heads to her new family nervously, but... - At first, Mei couldn't hide her nervousness about living with her new mother, Shizue, and her new sisters, Saki and Kokoa. - However, as he comes into contact with the love of the women in his family, he gradually regains his cheerfulness...