A high school senior named Youtarou thought he was an only child — until he met his real mother and discovered that she has 19 daughters, from 0 to 18 years old. Now he ends up living with his true family.
Youtarou Amatsuka (voice)
Yuki Kaji
Mama (voice)
Natsuko Kuwatani
Miharu Amatsuka (voice)
Rina Sato
Mizore Amatsuka (voice)
Yuka Saitou
Haruka Amatsuka (voice)
Yuko Goto
Hikaru Amatsuka (voice)
Haruka Tomatsu
Hotaru Amatsuka (voice)
Aya Uchida
Tsurara Amatsuka (voice)
Saki Fujita
Rikka Amatsuka (voice)
Kanae Itou
Kosame Amatsuka (voice)
Yuka Iguchi
Urara Amatsuka (voice)
Mariya Ise
Seika Amatsuka (voice)
Suzuko Mimori
Yuuna Amatsuka (voice)
Mai Hashimoto
Fubuki Amatsuka (voice)
Minori Chihara
Watayuki Amatsuka (voice)
Hisako Kanemoto
Mari Amatsuka (voice)
Aoi Yuuki
Mizuki Amatsuka (voice)
Kana Hanazawa
Sakura Amatsuka (voice)
Yoshino Nanjo
Nijiko Amatsuka (voice)
Yukika Teramoto
Sora Amatsuka (voice)
Iori Nomizu
Asahi Amatsuka (voice)
Asuka Ohgame