Kyuutarou Hoshino

About

Hachirota Hoshino's younger brother, he also displays a strong interest in space travel, and hence spends most of his time attempting to construct a working, miniature rocket, so as to prove his talent in that particular field. He maintains a shaky relationship with Hachirota, openly displaying disrespect for him. However he develops significantly throughout the series, especially after encountering Yuri Mihailokov.

Anime

Voice Actors

• 

  Bosch, Johnny Yong

  English
• 

  Hoshi, Souichirou

  Japanese
• 

  Garbolino, Davide

  Italian
• 

  Mehani, Taric

  French