|Season||Guardian Angels Of The Stars|
|First Appearance||Episode 57|
Hiroshi is a former child actor, who now is part of Rikka's newly formed band.
Oshiro Hiroshi is an energetic member of Momozaki Rikka's newly formed band. He takes the part of the drummer in the band and has formerly worked with Rikka during a television short movie. Even though he is not affected by the ongoing idol hype all across the country, he enjoys standing on stage with one of these idols. Hiroshi is one of the few people who call Rikka with her given name.
Hiroshi (博?) - Hiroshi is a Japanese given name for males that has multiple meanings. So it could mean "wide", "broad", "to win" or even "to court".