While her siblings possess exceptional talents and striking beauty, Miyako Amasawa, the middle child, remains the sole ordinary member of her family. With her parents occupied by work until late each day, Miyako takes on the responsibility for household chores and looking after her siblings. Viewed by others as the odd one out and frequently excluded from family matters by her siblings, Miyako doubts her role and significance within the family. Nevertheless, she finds comfort in Seiji Toono, her childhood friend and crush. Through him, she gains a new understanding of what family means. If only Seiji were not in love with her older sister!