S1·E12 Episode 12

After her treatment, Ru Bi visits Gyeong Min's family, hoping to finally be accepted. But his grandmother still keeps her distance. As the engagement begins to shake, Il Sun urges Gil Ja to reconsider the marriage. Meanwhile, In Su notices the mole on Ru Na's foot and starts questioning the sisters' identities. Desperate to protect her new life, Ru Na begs him to keep her secret just once.