Hello Shimai

An otaku manga artist named Banana Nangoku gives birth to her first child, a daughter named Tantan, and later becomes pregnant with a second daughter, Omochi. The challenge arises from Banana's own complicated relationship with her younger sister, marked by frequent verbal fights and insults throughout her life. Determined to break this cycle, she resolves to create a positive and happy sisterly bond between her two daughters. As she reflects on her past experiences, she prepares to implement her plan for a better sibling relationship.