Kyokou Suiri characters: ages, heights & birthdays

Youngest

19 (chapter 2-20), 20 (chapter 21+)

Kotoko Iwanaga

Oldest

25 (Flashback), 27/28 (Timeskip)

Rikka Sakuragawa

Every character at a glance

Character	Age	Height	Birthday	Japanese voice
Saki Yumihara	–	–	April 15 Aries	Misato Fukuen
Kotoko Iwanaga	19 (chapter 2-20), 20 (chapter 21+)	–	–	Akari Kitou
Kurou Sakuragawa	20 (chapter 1), 22 (chapter 30), 25 (chapter 30)	–	–	Mamoru Miyano
Rikka Sakuragawa	25 (Flashback), 27/28 (Timeskip)	–	–	Mayumi Saco
Karin Nanase	–	–	–	Sumire Uesaka
Aoi Tanio	–	–	–	Manami Hanawa
Tokunosuke Terada	–	–	–	Kenji Hamada
Kintama no Genichirou	–	–	–	Nobuo Tobita
Badanuki	–	–	–	Hiroki Gotou
Kamogawa no Kappa	–	–	–	Yoshimitsu Shimoyama
Ochimusha	–	–	–	Yoshimitsu Shimoyama
Orochi	–	–	–	Kouki Miyata

Ages and heights as listed on AniList; where a character grows up during the story, height is the latest one listed. Updated 2026-10-31.