Boarding House Reveals Sisters Fantasy Sex

Do-hoon experiences a whole new world after being dragged to a room salon by his older acquaintances. Wanting to share this experience, he introduces his friend Seong-ha to it as well. Enchanted by this new world, Seong-ha returns to the room salon alone the next day, and to turn him into a regular, the salon owner, Jong-min, sends Mi-ae and So-jeong into his room.