Etsuko is a 3rd year at Shinsami High School. She is Chizuri’s older sister and she is very protective over her. She is known as the bad girl around the school and she is willing to fight whoever she has to to keep herself, her sister, and friends safe. She is also very smart, but she loves her athletics. She is the number one player at Shinsami high for every sport. She is already set for university due to all of the scholarships that have been offered to her.