Ryudai Jinno attends Fukuhou Technical High School, also known as Fukubachi Technical High School, as a third-year student. He fills the role of relief server for the boys' volleyball team, specializing in serving during specific game situations. His given name, Ryudai (龍大), combines the characters for "dragon" (龍) and "big" or "great" (大). His surname, Jinno (神野), incorporates "god" or "deity" (神) and "field" or "wilderness" (野).