- Consist complete Episode 1-5
17 years before, Hazuki left her hometown of Mito and the family natto-making business to follow her brother Motoharu to Tokyo.
One day, Motoharu decided to go back Mito to inherit the family business, Hazuki was surprise over his brother decision, but she can do nothing to stop him.
Unfortunately, Motoharu passed away in the middle of his experiment of producing a better quality natto, Hauki's father intend to give up the business since there's no one to help him up yet his health was getting worst day after day. It's hard for Hazuki to see his brother effort just be wasted like this, she decided to give up her career in Tokyo and take over the business on the behalf of his brother.