Kurumi Saiki, mother of Kusuo and Kusuke and wife of Kuniharu Saiki, was born on May 14. At 37 years old, she is a Taurus with blood type O and stands 145 cm tall. Her parents are Saiki Kumi and Saiki Kumagoro. She met Kuniharu on November 22, 1994, when he intervened during harassment by Takeuchi Riki. They married exactly one year later on November 22, 1995. Their first son, Kusuke, was born nearly a year after the wedding, followed by Kusuo a few years later. Her maiden name is Saiki. Kurumi possesses a kind, gentle, and trusting nature, maintaining a youthful appearance with short black hair styled like Kusuo's but slightly longer; in her youth, she wore long black hair in a ponytail. Her kindness profoundly shaped Kusuo's morals, preventing him from misusing his psychic abilities. However, she becomes fiercely protective and intimidating when her family is threatened. A significant flaw is her inability to keep secrets, especially about Kusuo's powers, often forcing him to alter memories after her slips. As a housewife, she prioritizes family well-being and household management. Her relationship with Kuniharu is deeply affectionate, evidenced by their mutual affection measuring 38,689 on Kusuo's meter during a quarrel. She shares strong bonds with both sons, who respect her more than their father; Kusuke ignores Kuniharu but cares for Kurumi. Her father, Kumagoro, secretly desires more visits despite his cold demeanor. Kurumi is allergic to cats. Before the series, she lacked friendships with other mothers until befriending Mrs. Kaidou and Nendou Midori. Her history includes raising her sons and navigating family dynamics, resolving marital disputes and supporting her children. She once punched former classmate Masuda Shuuji for falsely accusing Kusuo of assault, marking her first instance of doubting someone. Her development shows increased social integration through mom friendships and unwavering family advocacy. She remains a stabilizing influence, emphasizing using powers to help those in genuine need.