|Season||Guardian Angels Of The Sky|
Ryota is a good friend of Aoba Yukio.
Katsuragi Ryota is a good friend of Aoba Yukio. Yukio and Ryota have probably known each other since pre elementary school and, even though they hardly appear in the series, it appears like they are very close. Yukio, Ryota and some others of their friends have formed a band, which is still very popular around Hisakata.
Katsuragi (葛城?) - Katsuragi comes from Katsura (葛?) meaning "plant" or "arrowroot", combined with Gi (城?) meaning "castle". The name Katsuragi could possibly come from Mount Katsuragi, a mountain in Gose, Nara Prefecture or the city with the same name.
Ryota (涼太?) - Ryota is a common Japanese given name for males, which comes from Ryo (涼?) meaning "cool" or "refreshing", combined with Ta (太?) meaning "great" or "thick". Ryota could loosely be translated as "great refreshment".