Single father Kenichi has raised his daughter Miki alone for the past 10 years. From when she attended nursery school until her graduation from elementary school. Kenichi is currently 30-years-old. His wife Tomoko died at a young age and he has raised Miki alone since that time. While raising his daughter alone, he has encountered various problems.
Based on novel "Step" by Kiyoshi Shigematsu.
