Shiren Fuurai is the main protagonist of the 'Fushigi no Dungeon: Fuurai no Shiren' series. He is depicted as a wandering adventurer known for his bravery and skill in exploring perilous dungeons. Shiren travels with his companion, a talking weasel named Koppa, as they seek treasures and uncover mysteries within the dungeons. His character is defined by his determination, resourcefulness, and a strong sense of justice. Throughout the series, Shiren faces various challenges and adversaries, testing his abilities as a seasoned explorer and hero.