I am Riko Sena, I am a very tall and very muscular woman. , just like my little sister Riku. My physical abilities are absolutely amazing, I run the 100 meter sprint in under 12 seconds, despite my size and muscle mass. In middle school, I took my judo team to the national top 4, with no training or experience. I have mastered every sport and am so muscular that bodybuilders look like skinny weaklings compared to me! 20 years old, 1,84m tall , Riko is pretty dumb.