Because This Is My First 30th Birthday

S1 A1: Jiho faces the worst moment of her life on her 30th birthday. Her long-lasted housemate, her brother, impregnated a woman, and now she is left homeless looking for a place. Meanwhile, Sehee is in a pit because he is left alone with the burden of paying rent for the upcoming months with his housemate moving out. Horang introduces Jiho to a townhouse and moves in. From the name "Sehee," she doesn't question anything about the house owner.