My mother passed away before I even had time to remember, and I've been living with my father ever since. Then, one day, a flashy woman came to our house. It seems she was my father's girlfriend...and so, my strange life together with Kaho began. While my father was away, it was just the two of us. Maybe it was because he treated me like a child...but I couldn't take my eyes off Kaho, who was so defenseless she was walking around in just a bath towel. And even though she was my father's girlfriend, Kaho's presence in my mind grew bigger and bigger with each passing day...