How Young Sisters Share a Man

Ji-soo becomes a boarding student at the home of sisters Mi-ae and So-jeong. On her first night as a boarder, So-jeong comes home drunk with her boyfriend Seong-ha and indulges in affectionate moments as soon as they open the door, completely forgetting about Ji-soo’s presence. After watching the couple’s intimate actions, Ji-soo finds herself unable to take her eyes off Seong-ha’s body.