My mother passed away before I could even remember, and now I live with my father. Then, one day, a flashy woman came to our house. It turned out she was my father's girlfriend...and so began my strange life of living together with Kaho. When 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 looked so defenseless as she walked around in just a bath towel. And even though she was my father's girlfriend, Kaho's presence in my mind grew bigger with each passing day...