Rinko Koujiro

Professor Koujiro Rinko is a supporting character in the Alicization Arc. She is a scientist, as well as the former love interest and co-worker of Kayaba Akihiko. She studied at the Toto Institute of Technology in Japan, where she was a part of Shigemura Lab in the institute's Electrical and Electronic Engineering Department. Koujiro Rinko is a petite young woman with short, straight, black hair. Koujiro Rinko is a loyal and caring person, having taken care of Kayaba Akihiko's condition during his two-year dive into Sword Art Online and never left his side as she had feelings for him.