Ryushen (緑仙) is a Japanese Virtual YouTuber and a member of NIJISANJI. Previously, they were a first-generation member of NIJISANJI SEEDs along with Dola, Hanabatake Chaika, Umiyashano Kami, Nakao Azuma, Izumo Kasumi, Todoroki Kyoko, Sister Claire, Yashiro Kizuku, Azuchi Momo, Suzuki Masaru, Uzuki Kou, and Hassaku Yuzu.

Their real name is Sengawa Midori. Despite their looks, Ryushen is of Japanese descent. Their gender is undisclosed. They love to sing and would like to make some friends through live streaming.