Marilyn is gone 1

Who am I? 24-year-old Kyoko Marihara, a teacher in Japan, has lost her memory of the past seven years due to a blow to the head, and is now a 17-year-old. 24-year-old Kyoko looks and acts like a different person from the serious and happy Kyoko of her 17-year-old life. Although she is a teacher, she has an impure relationship with her students.... What has happened in the past seven years? Kyoko tries to regain herself, but...?

Who am I? 24-year-old Kyoko Marihara, a teacher in Japan, has lost her memory of the past seven years due to a blow to the head, and is now a 17-year-old. 24-year-old Kyoko looks and acts like a different person from the serious and happy Kyoko of her 17-year-old life. Although she is a teacher, she has an impure relationship with her students.... What has happened in the past seven years? Kyoko tries to regain herself, but...?