Ririko Ishizawa (born September 27, 1991), better known by her ring name Rika Tatsumi, is a Japanese professional wrestler working for the Japanese promotions Tokyo Joshi Pro-Wrestling (TJPW) and DDT Pro-Wrestling. In 2023, she became TJPW's first-ever Grand Slam champion upon winning the International Princess Championship, having also previously been Princess of Princess Champion and Princess Tag Team Champion (alongside Miu Watanabe as Daydream).