カイリューとゆうびんやさん

福本莉子

as Hana (voice)

高橋伸也

as Kairyu (voice)

本渡楓

as Hana (5 Years Old) (voice)

藤原夏海

as Rio (voice)

佐藤利奈

as Rio's Mother (voice)

平川大輔

as Rio's Father (voice)

Sumi Shimamoto

as Hana's Grandmother (voice)

中博史

as Postmaster (voice)

熊谷海麗

as Hogator (voice)

栗坂南美

as Wanpachi (voice)

伊南羽桜

as Hitomoshi (voice)

杉崎亮

as Kairiky (voice)

suis

as Post-Office Clerk / Announcement (voice)