Nami Horikawa and Shiwaku, a young man aiming to become a resident physician. The secret bond between them dramatically changed Shiwaku's life. Shiwaku's biological mother suffered from severe tuberculosis after childbirth and passed away within just a few months. Afterwards, he was raised by Yamada, who worked as a housekeeper. However, Shiwaku gradually began to develop special feelings for Nami Horikawa, who had always treated him like a mother. Those emotions grew deeper over time, evolving into a powerful connection surpassing that of parent and child. Complex and intense feelings blossomed between them, leading to a conclusion more shocking than anyone could have imagined.