Seiren

Shōichi Kamita (嘉味田正一, Kamita Shōichi)

Voiced by: Atsushi Tamaru[5]

The protagonist of the series. A second year high school student who can't leave people in trouble alone. A bit of a pervert with a tendency to fantasize about naughty things, Shouichi is a lover of games, whether on home consoles, in arcades, or elsewhere.

Hikari Tsuneki (常木耀, Tsuneki Hikari)[6]

Voiced by: Ayane Sakura[5]

The class idol of class 2-B at Kibito High School and the runner-up of last year's "Miss Santa Contest". Described as a "modern day meddling princess", she is always cheerful and loves to eat, and is occasionally stubborn. She also has a part-time job working as a cook in a restaurant.

Toru Miyamae (宮前透, Miyamae Toru)[7]

Voiced by: Shino Shimoji[5]

A student in class 3-A at Kibito High School. She is skilled with her hands when playing video games or crafting original goods. She finds it hard for her to keep up a conversation with those who don't share her hobbies.

Kyōko Tōno (桃乃今日子, Tōno Kyōko)[6]

Voiced by: Juri Kimura[5]

A childhood friend of Shōichi and a first year student in Kibito High School. She is an honors student with high grades and loves to read Shōjo manga. She can act childish at times, which is an aspect of herself that she worries about.

Ikuo Nanasaki (七咲郁夫, Nanasaki Ikuo)

Voiced by: Ryōta Asari[5]

Shouichi's childhood friend, and the younger brother of Ai Nanasaki from Amagami, who was a bit of a prankster in elementary school. Thanks to his elder sister's influence, he eventually grew a more calm personality and became more studious.

Tomoe Kamita (嘉味田十萌, Kamita Tomoe)[7]

Voiced by: Manami Numakura[5]

The protagonist's only older sister who was last year's Miss Santa. She is in class 3-A at Kibito High School. With the personality of an air-headed idol, she naturally charms others, hence her popularity at her school. However, she secretly has a dirty mouth, swearing with little restraint.

Yukie Takato (高遠由貴恵, Takato Yukie)

Voiced by: Saki Fujita[8]

One of Hikari's friends who used to like Tatsuya.

Yoko Kikuchi (菊池洋子, Kikuchi Yoko)

Voiced by: Yukiyo Fujii[8]

One of Hikari's friends who participates in the school's swimming club.

Tatsuya Araki (荒木達也, Araki Tatsuya)

Voiced by: Takuya Eguchi[5]

Shōichi's and Ikuo's friend who hangs out with them in the arcade. He is popular with the girls in Kibito High School and has a deep interest for animals.

Makoto Kamizaki (上崎真詩, Kamizaki Makoto)[9]

Voiced by: Shiori Mikami[5]

A first-year high school student who is part of the Public Morals Committee.

Ruise Sanjō (三条るいせ, Sanjō Ruise)[7]

Voiced by: Honoka Kuroki[5]

A second-year student and the current chairman of the Public Morals Committee in Kibito High School.

Masami Onigata (鬼型雅美, Onigata Masami)

Voiced by: Yukari Tamura[5]

The homeroom teacher for class 2-B in Kibito High School.

Miu Hiyama (桧山水羽, Hiyama Miu)}[9]

Voiced by: Shiori Izawa[5]

A little bit naive about the world, she's a swimming club member from Sakuragawa East, an all girls' high school.

Toka Marushimi (丸石燈花, Marushimi Toka)

Voiced by: Juri Nagatsuma[8]

She is the friend of Miu and is also a member of Sakuragawa East's swimming club.

Mako Yoshida (吉田麻子, Yoshida Mako)

Voiced by: Mai Kadowaki[10]

Hikari Tsuneki's classmate in the "Save Our Scores" class during a cram school summer seminar.

Sōta Miyamae (宮前宗太, Miyamae Sōta)

Voiced by: Kentarō Tone

Toru's brother who works as a teacher in a cram school. He also participates in the cram school's yearly summer seminar, where he wears sunglasses and carries a bamboo stick to appear strict among the students.

Shiori Nagasawa (永沢栞, Nagasawa Shiori)

Voiced by: Yū Asakawa

A third-year student in Kibito High School who is friends with Tomoe and Toru. She is also the president of the Home Ec Club until the second semester.

Koharu Uno (宇野小春, Uno Koharu)

Voiced by: Yuka Ōtsubo

She is the president of the Home Ec Club after Shiori stepped down.

Nao Tokioka (時岡奈緒, Tokioka Nao)

Voiced by: Hitomi Harada

She is the vice-president of the Home Ec Club.

Takeshi Yuki (湯木健, Yuki Takeshi)

Voiced by: Natsumi Fujiwara

The son of the restaurant owner Hikari works for. He typically wears an eyepatch and plays in the arcade with his friends.

TBS revealed plans for a new anime series, with Kisai Takyama working on the project.[11] This original anime television adaption was later officially named Seiren.[12] The series is directed by Tomoki Kobayashi at Studio Gokumi and AXsiZ. It aired on TBS in Japan from January 5, 2017[5] to March 23, 2017. The series was also simulcasted in the United States of America, Canada, Australia, New Zealand, and Latin America on Crunchyroll.[13] The series uses an omnibus format, in which each major character arc is a self-contained four-episode story. These major arcs are focused on three characters: Hikari Tsuneki, Toru Miyamae, and Kyōko Tōno.[14] However, it was also noted that there were plans for character arcs involving Miu Hiyama, Makoto Kamizaki, and Ruise Sanjō in the future.[15]

The opening theme, "Your Flower" (キミの花, Kimi no Hana), is sung by Hanako Oku. There are three ending themes. The first theme, "Moment Happening" (瞬間 Happening, Shunkan Happening), is sung by Ayane Sakura. The second theme, "Unrivalled Goddess" (ムテキの女神, Muteki no Megami) is sung by Shino Shimoji. The third theme, "Theory of Love" (恋のセオリー, Koi no Seorī), is sung by Juri Kimura.[14]

In anticipation of the anime premiere, two official webcomics illustrated by Piaisai titled "Amagami Characters Do the Seiren Interview" (アマガミキャラによるセイレンインタビュー, Amagami Kyara Niyoru Seiren Intabyū) and "Seiren Heroines Do the Amagami Challenge!" (セイレンヒロインによるアマガミちゃれんじっ!, Seiren Hiroin Niyoru Amagami Chirenji!) were released. These webcomics involve characters from Seiren and the dating simulation game, Amagami.[14]