I Give My First Love to You

Mao Inoue

as Mayu Taneda

Masaki Okada

as Takuma Kakunouchi

Tetta Sugimoto

as Minoru Kakinouchi

Yōko Moriguchi

as Ryoko Kakinouchi

Yoshihiko Hosoda

as Kou Suzuya

Natsuki Harada

as Teru Uehara

Toru Nakamura

as Dr. Takahito Taneda

Yuki Terada

as Yuiko Tamura

Masataka Kubota

as Ritsu Sugiyama

Keiko Horiuchi

as Yoshimi Suzuya

Gaku Yamamoto

as Ryujo Suzuya

Kaito Kobayashi

as Takuma Kakunouchi (child)

Sea Kumada

as Mayu Taneda (child)

Ryunosuke Suzuki

as Sudo

Toshi Takeuchi

as Student

Mari Okamoto

as High school student

Kotaro Shiga

as English teacher

Yuji Abe

as Teacher Ito

Yuki Torigoe

Yûsuke Fukuda

Takumi Kizu

as Kamio Kotaro