While my girlfriend was on a trip with her family for four days, I had sex with my childhood friend Urara Kanon.

I realized this when my childhood friend Hiromu had a cute girlfriend. I decided that I like Hiromu. However, I decided to keep this feeling deep within my heart. But that day, I saw it. I saw Hiromu having sex with his girlfriend... When I saw that...I couldn't stand it anymore... A record of my girlfriend having sex with her childhood friend while she was on a four-day trip with her family.