Haruka ShiraishiRuri "Hibari" Hibarigaoka (voice) / Theme Song Performance Hibiku YamamuraHibiki Hagyuu (voice) / Theme Song Performance Kiyono YasunoBotan Kumegawa (voice) / Theme Song Performance Mayu YoshiokaRen "Len" Ekoda (voice) / Theme Song Performance Yumiri HanamoriAnne "Hanako" Hanakoizumi (voice) / Theme Song Performance Chitose MorinagaTimothy / Tsubaki Sayama (voice) Yumi HaraKodaira-sensei (voice) Yuko GibuSakura Hanakoizumi / Hibiki's mother / Housekeeper (voice) Ami KoshimizuSaginomiya-sensei (voice) Satomi AraiUmebaba-san (voice) Jin TamamuraDirector / Storyboard Hiroyuki KobayashiProductor Shunsuke MatsumuraProductor Takeshi HirookaDirector Of Photography Shin OonumaSeries Director / Storyboard Misato TakikawaAssistant Editor Kiyono YasunoBotan Kumegawa (voice) / Theme Song Performance Yumiri HanamoriAnne "Hanako" Hanakoizumi (voice) / Theme Song Performance Haruka ShiraishiRuri "Hibari" Hibarigaoka (voice) / Theme Song Performance Yuuki GoufumiSound Director Mayu YoshiokaRen "Len" Ekoda (voice) / Theme Song Performance Takashi MurakamiMusic Producer Hibiku YamamuraHibiki Hagyuu (voice) / Theme Song Performance Miwa OshimaCharacter Designer Erika TsukinoColor Designer Yoshiki NozawaKey Animation Ken MukaigawaraAnimation Director Shigeki AwaiAnimation Director Yusuke KawakamiKey Animation Jin TanakaSeries Composition Tomoyuki KawamuraStoryboard 
