She’s half klaxosour… All she wants is her darling… hiro… She is kind and sweet and loves to eat sweets Over time, Zero Two developed romantic feelings towards Hiro. However, her determination to become fully human, along with Hiro's apparent fear of her increasing feral characteristics resulted in the couple briefly drifting apart. When their relationship as partners began to take a turn and slowly crumble, they realized their forgotten memories of their meeting during childhood.