GUMIN☠DAYS Label

START: CHUNITHM ORIGIN (2015)
CURRENTLY ONGOING (2025)

Denpa/Idol ~ Comedy ~ Medium reading length (episodic, 180k words)

GUMIN DAYS is a Label that specializes in the niches, the absurdity, and the soul of Otaku culture.

- ABOUT THIS LABEL -

GUMIN DAYS is a Label that specializes in the niches, the absurdity, and the soul of Otaku culture. Separated loosely into arcs with some independent character stories, GUMIN is best enjoyed with the lens of it being an earnest love letter to the anime and hobby culture that Japan has cultivated over the years.

We recommend reading GUMIN for Otaku in general, people that love anime and its assorted classic tropes, and comedy that suspends disbelief.

- (META) INFORMATION -

GUMIN stories, especially starting in CHUNITHM CRYSTAL, are full of esoteric references to Otaku culture, pop culture, and even beyond. Dedicated fans on the Japanese wiki have created lists of references and their meanings to each applicable character story. It's worth noting that since GUMIN pulls from Japanese culture so heavily, some things may be untranslatable, or not make sense to a non-otaku audience.

Since GUMIN DAYS is lower on our translation priorities, and fully translating every character is out of our scope, expect updates to be very infrequent.
(If you're interested in contributing translations to help us, please check here!)

Characters with active pages/translations will have their names bolded and underlined.

General disclaimer:

GUMIN DAYS is a Label that encompasses all parts of Otaku culture, including content that some might find unsavory in one way or another.
Non-explicit sexual content and themes of fetishism pervade many of these characters' stories, but not all.

Characters marked with 1 asterisk (*) have milder or infrequent sexual themes in their stories.
Characters marked with 2 asterisks (**) are deemed to have unavoidable highly sexual themes in their stories.

It's also worth noting that some of the character artworks here are considered NSFW, and borders on sexually explicit. Many of these illustrators are known for creating NSFW artworks. Please take care when viewing.

Quick Links:

Demon Continent Akihabara Arc / Kansai Arc / Otaku Stream Arc / Independent Characters / Variants

- Demon Continent Akihabara Arc -

A world domination movement is started by Yuria Onimamushi to convert everyone into Otaku, starting with the city of Tokyo. The story culminates in Akihabara rising into the air, where the Tokyo idols face off against a trio of resurrected idols from the Edo period who aim to brainwash the masses into Otaku.

Yuria Onimamushi

ORIGIN

Torebi Hawa**

AIR

Koutarou Yatagarasu**

AIR

Nikoru Canonji*

STAR

Shizuno Tsukui

STAR

Momoko Arai

AMAZON

Airi Onimamushi

AMAZON

Ingrid Orrick Cornell

CRYSTAL

Hibari Chiun**

CRYSTAL

Nanko Igasakino**

CRYSTAL

Kotetsu Amainari*

CRYSTAL

Yuria Onimamushi / Archangel Yuria

CRYSTAL

- Kansai Arc -

From CHUNITHM PARADISE onward, GUMIN's stories take place in Osaka, (after the Demon Continent Akihabara crash-landed in Lake Biwa), dubbed the "Kansai Arc".

Raimu Takasu**

PARADISE

Lee Mei-Mei*

PARADISE

Yui Toroshiro*

NEW!!

Saneru Yodogawa**

NEW!!

- Otaku Stream Arc -

From CHUNITHM SUN onward, most of GUMIN's stories take place in the past—using the power of an energy flow known as the "Otaku Stream," Yakumo and the Kansai girls team up to go back and save the lives of various otaku girls from their untimely deaths.

Koyomi Hatagiri

SUN

Yakumo Abe*

SUN

Erika Takanashi

SUN

Tsukasa Shinkai**

SUN

Yu Yagenbori

SUN

Mimimi Inuhiro**

LUMINOUS

Fumi Hanyuu**

LUMINOUS

Maiko Akemizawa

LUMINOUS

Saneru Yodogawa / Takoyaki Daydream**

LUMINOUS

Yui Toroshiro / Dream of Desire**

LUMINOUS

Yuria & Airi Onimamushi / null☆nulll Panic**

VERSE

Liisa Virtanen*

VERSE

- Independent Characters -

These characters have stories independent from any other GUMIN arc. Up until CHUNITHM VERSE, these characters all shared a general "idol" theme.

Hikari Aino

ORIGIN

Kizuna Kurohara

ORIGIN

Haruna Mishima

ORIGIN

Coco Usagine

ORIGIN

Ai Amano*

AIR

Hikari Aino / Beloved Light

AIR

Coco Usagine / Gestalt Collapse

AIR

Haruna Mishima / Dream Fragment

AIR

Haruna Mishima / Fleeting Promise

STAR

Coco Usagine / Summer! The Sea! Summer Lessons!

STAR

Hikari Aino / Sunshine Summer*

STAR

Haruna Mishima / After School Angel

AMAZON

Coco Usagine / Entrance Exam Counseling Room

AMAZON

Hikari Aino / Strongest Bride

AMAZON

Hikari Aino / Biggest Cheer

NEW!!

Karen Asumizawa*

VERSE

- Variants -

These characters do not have a story attached.

Characters all link to a centralized "GUMIN DAYS Character Variants" page with information.

Variants (With Song)

Character variants with an attached song.

Koutarou Yatagarasu / Comforting Angel

Yuria Onimamushi / Servant Master

Variants (Without Song)

Character variants without a song attached.

Nikoru Canonji / Portrait Mafia

("SEGA Lucky Lottery" F Prize)

Kizuna Kurohara / Circle Princess

(Goods Exchange Campaign Vol. 6)

Yuria Onimamushi / GUMIN☆DAYS

(Goods Exchange Campaign Vol. 8)

Airi Onimamushi / GUMIN☆NATION

(Goods Exchange Campaign Vol. 8)

Nikoru Canonji / Blissful Photo Time

(Digital Item Campaign Part 2)

Mimimi Inuhiro / Midsummer Awakening

(CHUNITHM 10th Anniversary Digital Item Campaign)

Card Maker

Card Maker character variants without a song attached.

Shizuno Tsukui / Gumyoji Temple Onsen Story

Coco Usagine / Perfect Dream

Torebi Hawa / Tentacle Sweets

Hikari Aino / Shiny Flower

Yuria Onimamushi / All-Star Track Meet

Momoko Arai / Autumn Onsen Trip

Koutarou Yatagarasu / Good Luck Cherry Blossom Viewing Bento Box

Ingrid Orrick Cornell / Maiden's Hot Spring

Coco Usagine / Secret Tutoring

Airi Onimamushi / All-Star Track Meet

Hibari Chiun / After-bath Live

Nanko Igasakino - Nyanja♡Festival

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