The Nanafushigi (七不思議, Seven Wonders) is an unofficial title which refers to seven exceptionally powerful spiritual beings with the strength required to challenge the great destroyer Averian. Thus far in the series they are the only individuals who Averian has treated with any respect, as they are the only ones who have ever come close to killing him. The first duo to be given this title where Kenji Hiroshi and Van Satonaka, with the last being Kentaro Hiroshi.