Seo Hye-ra, the only daughter of the Seo family. In front of her, due to her father's remarriage, appeared her fifth stepmother and stepsister, Sua. Hye-ra felt uncomfortable with her new family and Sua... "What time did you come home yesterday?" "Why do you keep asking that? Are you my mom or my girlfriend?" "I can be both, it doesn't matter." Before she knew it, Sua had stepped into Hye-ra's boundaries. Because they were both women, because they were step-sisters. Sua kept shaking Hye-ra's heart, which was desperately trying to turn away from her feelings. "Loving someone isn't a sin, right?" *** "I'm Jin Sua." As soon as the woman answered like that, an aunt shouted from behind. "You should say Seo Sua!" The woman's gaze went to the aunt and then back to me. "She said Seo Sua." The woman said as she took my hand. She gripped my hand very tightly, almost to the point of breaking it. "You can't just change your name like that." "Ah..." "It causes confusion in your identity." By the way, why did she want to see me? I said without letting go of her hand. "Nice to meet you. I'm Seo Hye-ra."