The de facto marriage between Moriyama Shikuri (played by Yui Aragaki) and Tsuzaki Heikuni (played by Gen Hoshino) is going on happily and easily. In the friction of daily life, they gradually accept each other's different pace of life, and their relationship becomes more and more intimate and harmonious. At this juncture, Shikuri found out that she was pregnant. After finally adapting to the new identities of "wife" and "husband", the young couple once again faced the next challenge - becoming "father" and "mother". The discomfort caused by pregnancy caused repeated friction between Shikuri and Heikuni. Fortunately, both of them are gentle and delicate people. They rely on their love for each other to go through one difficulty after another. Finally, the child was born, but at the same time, the terrible pneumonia epidemic broke out. In order to ensure the safety of his wife and children, Heikuni sent Shikuri and the child back to her mother's home.