Y/N Griffin has always been Clarke’s younger sister first and everything else second. She and Clarke have survived the Ark together, and when the 100 are sent to Earth, Y/N refuses to let Clarke face the new world alone. The one thing keeping Y/N grounded is Finn Collins, her boyfriend and best friend. But after discovering an abandoned bunker, Y/N accidentally awakens two men who have been frozen in time for decades: Steve Rogers and Bucky Barnes. Steve immediately sees Y/N as someone worth protecting. Bucky, however, sees something deeper. Y/N’s compassion reminds him of the person he was before HYDRA stole his life, and he becomes fiercely protective of her. As the group begins traveling together, an unexpected family forms. Steve becomes the older-brother figure Y/N never knew she needed. Bucky becomes the person she can sit beside in silence without ever feeling judged. Clarke slowly learns to trust them, even though she remains suspicious of their connection to Y/N. Finn, however, struggles. He’s grateful that Steve and Bucky have saved Y/N’s life more than once, but he can’t shake the feeling that Bucky understands Y/N in a way he doesn’t. Then everything falls apart. Y/N is captured by the Grounders while trying to protect Clarke. Finn wants to rescue her immediately, but Clarke insists they need a plan. Steve refuses to wait. Bucky refuses to leave without her. And Finn finally realizes that these two men aren’t competing with him—they’re willing to risk everything because Y/N has become family. When they finally find Y/N, she’s injured, terrified, and convinced everyone came looking for Clarke instead of her. But Steve kneels beside her and tells her: “You don’t have to be Clarke’s little sister anymore. You’re one of us.” For the first time since landing on Earth, Y/N realizes she isn’t just surviving. She’s found another family.