Kurumi Saiki, in "The Disastrous Life of Saiki K," is the caring and optimistic mother of the protagonist, Saiki K. She is known for her cheerful and loving nature, often providing a warm and supportive environment for her family. Kurumi tends to be overly trusting and somewhat naive, leading to humorous scenarios in the series. She deeply cares for her son and is mostly oblivious to his psychic abilities, showcasing a simple, content approach to life.