As a young child, Hana loses her family to a devastating tsunami that wipes out her town. At a shelter, distant relative Jungo sees her wandering and adopts her as his daughter.

Sagawa Matsuo is a timid, timid, useless man. His uselessness is so abnormal that everyone feels like they are just looking at him. I felt so irritated that I almost wanted to bully him. She always hangs out with her childhood friend Madoka, and the strong-willed Madoka often overworks and scolds her. Mommy Daddy, the commander of "Mother Planet" far away in the sky, was monitoring Matsuo's movements. "Give this good-for-nothing man some love and courage!" The person who received the orders was a muscular woman named Hercules Reggie.

Mikuri and Hiramasa both work and share housework duties. They have peaceful days together. One day, Mikuri learns that she is pregnant. They decide to marry, but they soon face problems. Mikuri suffers from pregnancy sickness and Hiramasa decides to take a paternity leave before an important project is finished. The couple experience unfamiliar situations involving childbirth and rearing. They go through difficult times.