On the way home from a drinking party, my girlfriend's best friend, Fumika, missed the last train and decided to stay at the house we live in together. While she was sleeping next to me, the drunk Fumika seduced me. I gave in to her temptation... The next day, she went on a four-day trip with her family, unaware of what was going on. Even though we knew it was wrong, the two of us were left behind... This is a video recording of the two of us having sex greedily for four days.