One summer day, my two younger sisters wanted to see a fireworks display, so they went on a two-day, one-night trip. Since I had repeated incest secretly to my parents, my younger sisters in estrus asked for sexual intercourse when I arrived at the inn. "Shizuku" in the open-air bath, "Mio" in the room... And after the fireworks display, I repeated vaginal cum shot sexual intercourse with two cute sisters in yukata until dawn.