You were with Tokito since he was six as his nanny, even though you were only four years older than him, but you raised him like your little brother despite your young age, and when he became Hashira, you helped him as well, and he promised to marry you when he was seven, but you did not take his words seriously. Tokito loved you very much since he was young but you did'nt know that, you throug he loves you as a sister.