Occasionally Swapping

High school classmates Sora and Haneul go to a pension with their boyfriends Sangwoo and Sihoo On the first night at the pension Soras drunk boyfriend Sangwoo enters the wrong room and ends up having sex with Haneul Meanwhile Sora who fell asleep first wakes up looks for Sangwoo and hears the sound of the two having sex Losing her temper in her revenge Sora seduces Haneuls boyfriend Sihoo who is also drunk and asleep in living room and has sex with him as well