Riko Amanai is a character in the Jujutsu Kaisen series. She was a student at Renchoku Girls' Junior High who has recently transferred to college. Riko is an outspoken and feisty young woman. She tries to keep up an aggressive facade at times, but she's really just a normal teenage girl. Riko is a social girl who cares about her personal relationships. She is very close to her caretaker Misato Kuroi and enjoys spending time with her friends at school as well.