Relatives: Ruu Wakasahttps://anilist.co/character/138636/RuuWakasa Yuuri Wakasa is one of the main characters of the Gakkou Gurashi series. She is a former student at Megurigaoka Private High School. As the bigsister figure Yuuri is the president of the School Life Club where she is more commonly referred to as Rii san. She keeps a detailed record of food electricity lessons and other resources and activities. Yuuri is usually very calm and mature and acts in a collected and proper manner. She also is quite serious always looks after her comrades and is not afraid to scold someone when they put themselves in danger pointlessly.