She said she would leave her house on a three-day family trip, so she had sex with her friend for three days (tentative)

I often play with my girlfriend, my girlfriend, and her friends, Urara and Hina. While she wasn't looking, Urara looked at me and rubbed her body against me, and it seemed like she was interested in me. One weekend, she was going on a family trip, so we didn't meet for three days. And just the day she left, Urara and I, who invited me, had an affair. Hina then sniffs in, and my house turns into a brief, sex room. The time for Urara and Hina to have sex with the two of them with different charms passed in a flash, and the day she was coming back was approaching.