Seiren (2017)

Original title: セイレン

For high school students like Shouichi Kamita, university entrance exams and the future are common concerns. It is also during this time in life that a mysterious emotion that vexes people of all ages may begin to weigh upon one's mind—love. At this point in his teenage years, Shouichi finds three girls he could see himself having a future with: the ever-cheerful Hikari Tsuneki, who teases Shouichi without mercy, but actually has a softer side; the competitive gamer, Tooru Miyamae, who has difficulty communicating with others; and Shouichi's childhood friend, Kyouko Touno, the sometimes immature shoujo manga enthusiast. Seiren follows Shouichi's relationships with these three girls across three separate arcs, as their feelings grow from mutual interest and blossom into something more beautiful.

Seiren

Watch Providers

Crunchyroll Amazon Channel

Casting arrow_drop_down

as Shouichi Kamita (voice)

as Hikari Tsuneki (voice)

as Kyouko Touno (voice)

as Tooru Miyamae (voice)

Manami Numakura

Manami Numakura

as Tomoe Kamita (voice)

as Ikuo Nanasaki (voice)

as Yukie Takato (voice)

as Ruise Sanjou (voice) as Customer (voice) as Announcer (voice)

as Tatsuya Araki (voice)

as Youko Kikuchi (voice)

as Miu Hiyama (voice)

as Hiking Club President (voice)

as Makoto Kamizaki (voice)

as Shouichi Kamita (Childhood) (voice) as Bus girl (voice)

as Masami Onigata (voice)

as Toka Maruishi (voice)

as Mako Yoshida (voice)

Natsumi Fujiwara

Natsumi Fujiwara

as Takeshi Yuki (voice)

Shin-ichiro Miki

Shin-ichiro Miki

as Naotake Yuki (voice)

as Schoolboy (voice) as Player (voice)

Yoshitaka Yamaya

Yoshitaka Yamaya

as Manabu Isomae (voice)

as Vermillion (voice)

as Customer (voice) as Schoolgirl (voice)

as Male Student (voice) as TV Host (voice)

as Rin Sanjō (voice)

as Customer (voice) as Schoolgirl (voice)

as Wataru Tsuchiya (voice)

as Pancake house worker (voice)

as Schoolgirl (voice)

as Kindergartner (voice)

as Nozomi Kamita (voice)

as Kindergartner (voice)

Sayaka Senbongi

Sayaka Senbongi

as Schoolgirl (voice)

Seiichiro Yamashita

Seiichiro Yamashita

as Cameraman (voice)

as College student (voice)

as Schoolboy (voice)

as Middle school student (voice)

arrow_drop_up

Seasons

Season 1

Season 1

Episodes season 1

1x1

Hikari tsuneki, chapter 1: decision
1x2

Hikari tsuneki, chapter 2: deep in the mountains
1x3

Hikari tsuneki, chapter 3: in the men's bath
1x4

Hikari tsuneki, final chapter: starry sky
1x5

Tooru miyamae, chapter 1: trade
1x6

Tooru miyamae, chapter 2: versus
1x7

Tooru miyamae, chapter 3: brother complex
1x8

Tooru miyamae, final chapter: fluffy
1x9

Kyouko tono, chapter 1: home ec club
1x10

Kyouko tono, chapter 2: hand-me-down
1x11

Kyouko tono, chapter 3: awakening
1x12

Kyouko tono, final chapter: first love

Recomendation Series

NextFilm 2026