After their mother's passing and father's disappearance due to gambling debts, the Yamada sisters, Kyo at 15 and Asu at 9, face the challenge with resilience. While Kyo balances school with odd jobs like newspaper delivery and tutoring under the new legal system, Asu takes on household responsibilities and financial management to support her sister. Alongside supportive neighbors like the novelist Saegusa-san and the caring public bath aunt, the sisters find solace in each other's company amidst life's hardships, cherishing the bond that keeps them strong.