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Hakuchuumu no Aojashin


Hakuchuumu no Aojashin
Cyanotype Daydream -The Girl Who Dreamed the World-
Bairimeng de Gouxiangtu
Aliases夢青, Musei, The girl who's called the world, yonagi, CyanDream
Play timeLong (32h from 117 votes)
PublishersLaplacian & Syawase Works & The Math God
Laplacian & Syawase Works & Dir-A
Laplacian & Syawase Works & The Math God
Team Myskrpatch
Same setting

Kimi to Yumemishi

Newton to Ringo no Ki

Mirai Radio to Jinkou-bato

LinksWikidata, GameFAQs, GameFAQs, VGMdb, ACDB, HowLongToBeat, IGDB, IGDB, VNStat


Kaito wakes to find himself in a strange room with no memories of who he is or how he got there. The only other people around are a quiet white-haired girl and their overseer, Izumo. As three separate stories unfold around him, Kaito begins to wake up to the truth of this world, and his own role in it. And it's all connected to the strange, silent girl named Yonagi...

CASE-1 Hatano Rin
Arishima Kaoru is a 45-year old part-time teacher, stuck in an unhappy marriage and living a life of tedium after having long given up on his dreams of becoming a novelist.

One day, he finds out that a student of his, Hatano Rin, is none other than the daughter of the writer he once admired above all others.

As the relationship between the two deepens, Arishima grapples with immoral impulses toward this younger girl. But even as his life spirals and his marriage crumbles further, he picks up his pen and starts to write again.

CASE-2 Olivia Berry
Our stage is set in the heyday of Elizabethan theater, a time where women were prohibited from acting on stage.

A young William Shakespeare runs a failing pub together with his blind father. Blessed with a perfect memory, he uses the tales his patrons tell as inspiration for the plays he writes to earn extra income.

When his fate ends up in the hands of one Olivia Berry, a woman with a fiery personality and a fierce sense of purpose, Will finds himself in the midst of a real-life drama of his own.

CASE-3 Momonouchi Sumomo
Amei Kanna is a college dropout who spends his time holed up in his dad's garage trying to fix his late mother's old, beat up camper van.

But when a young teacher-in-training shows up out of the blue, she provides the spark to get him out of his mancave and into the world again.

Together with the self-styled scrap hunter Azuki, they set out on an adventure to find the special place Kanna's mother left behind in a drawing.

As Halley's comet streaks across the sky, the three share an unforgettable summer of sweet beginnings and bitter ends.


After experiencing these stories and bidding farewell to them, the threads converge in the truth of one girl.

[Edited from Steam]

Amnesiac ProtagonistS 3.0 Central Heroine 3.0 Dream 3.0 Flashback 3.0 Life and Death DramaS 3.0 Memory AlterationS 3.0 Pure Love Story 3.0 Virtual RealityS 3.0 White Haired Heroine 3.0 Science Fiction 2.9 Multiple Protagonists 2.8 Protagonist with a Face 2.8 Amnesia 2.8 Male Protagonist 2.8 Adult Protagonist 2.8 Heroine with Sexual Experience 2.8 IllnessS 2.8 Multiple Credit Rolls 2.8 PregnancyS 2.8 Unlockable Epilogue 2.8 Adult Heroine 2.7 High School Student Heroine 2.7 Multiple Route Mystery 2.7 Other Perspectives 2.7 Protagonist Based on Real Person 2.7 Scientist ProtagonistS 2.7 Under the Same Roof 2.7 Unlockable Sexual Content 2.7 ADV 2.6 Coming-of-Age Drama 2.6 European Heroine 2.6 Multiple Opening Movies 2.6 Student-Teacher Romance 2.6 Nakige 2.6 Attempted SuicideS 2.5 Cowgirl 2.5 Photographer Protagonist 2.5 Post Apocalyptic EarthS 2.5 Theater 2.5 Writer Protagonist 2.5 Teacher Protagonist 2.4 Backlog Jump 2.3 Changeable Font 2.3 Jump to Next Scene 2.3 Jump to Prior Scene 2.3 May-December Romance 2.3 Missionary Position 2.3 Protagonist in Relationship 2.3 Quickie Fix Position 2.3 Single Blowjob 2.3 Standing Sex 2.3 Robots 2.2 Sitting Sex 2.2 Actress Heroine 2.2 Bar 2.0 Bonus Side Stories 2.0 Built-in Encyclopedia 2.0 BullyingS 2.0 Classic Tsundere Heroine 2.0 Co-worker Support Character 2.0 Cunnilingus 2.0 Doggy Style 2.0 Early Modern Period Earth 2.0 Has Window Transparency Setting 2.0 Heroine with Big Breasts 2.0 Naked Sprites 2.0 Near Future 2.0 Pillow Talk 2.0 Pregnant SexS 2.0 Pretending HeroineS 2.0 Promiscuous Heroine 2.0 RapeS 2.0 Slave HeroineS 2.0 Twitter 2.0 UtopiaS 2.0 Vaginal Fingering 2.0 Single Footjob 1.8 Kissing Scene 1.7 Single Handjob 1.7 Sixty-nine 1.7 Slave Protagonist 1.7 Spoons 1.7 Drunk Sex 1.5 Middle School Student Protagonist 1.5 Protagonist with Sexual Experience 1.5 Side Portraits 1.5 Condoms 1.3 InfidelityS 1.3 Teacher Heroine 1.3 Heroine Having Sex with Others 1.0 Love Hotel 1.0 Middle Ages Europe 1.0 Sexual Fantasizing 1.0 Protagonist's Wife as a HeroineS 0.7 High School Student Protagonist 0.5


Japanese (8)
2020-04-1018+Hakuchuumu no Aojashin - Trial Edition
2020-09-2518+Hakuchuumu no Aojashin - Download Edition
2020-09-2518+Hakuchuumu no Aojashin - First Press Edition
2022-02-09AllHakuchuumu no Aojashin
2022-11-1717+Hakuchuumu no Aojashin - Collector's Box
2022-11-1717+Hakuchuumu no Aojashin - Download Edition
2022-11-1717+Hakuchuumu no Aojashin - Regular Edition
2023-07-2818+Hakuchuumu no Aojashin Restoration Patch (unofficial patch)
Korean (1)
2020-11-0718+Hakuchuumu no Aojashin (unofficial patch)
English (3)
2022-02-09AllCyanotype Daydream -The Girl Who Dreamed the World-
2023-02-09Cyanotype Daydream -The Girl Who Dreamed the World- (unofficial patch)
2023-07-2818+Hakuchuumu no Aojashin Restoration Patch (unofficial patch)
Chinese (simplified) (3)
2022-02-09AllBairimeng de Gouxiangtu
2022-02-1318+Bairimeng de Gouxiangtu (unofficial patch)
2023-04-2918+Bairimeng de Gouxiangtu - H Parts (unofficial patch)
Russian (1)
2023-07-16AllCyanotype Daydream -The Girl Who Dreamed the World- (unofficial machine translation patch)


Original edition
  • Vocals
  • yukiCase 1 OP "Clammbon", Case 2 OP "Tsumetai Kabe no Mukou ni", Case 3 OP "Koi Suru Kirigirisu", Case 0 OP "Into Gray", Case 1 ED "Bulganillo", Case 2 ED "Yoake no Katasumi de", Case 3 ED "Natsu no Time Capsule", Case 0 ED "Naida Umi no You ni"
  • Staff
  • Fujino MasatoPlanning & setting cooperation, scientific research
  • Hayashi RyousukeSound production, script
  • Muu DoggSound director, sound effects, script
  • Ono WasabiPlanning, music production, OPs and EDs lyrics
  • PelletColoring supervision
  • Ryuutsuu N KawaPlanning cooperation
  • Shikin GuriguriPlanning cooperation
  • ShimofuriColoring supervision
  • Ueto KoukiDesign works, graphic assistance, script, title logo, UI
  • Yoshimune KoukiPlanning cooperation
  • Scenario
  • AkeoH scenes
  • Hamaguri KonosukeH scenes
  • Midou HarukaH scenes
  • MorryH scenes
  • Ono WasabiMain writer
  • Vocals
  • yukiCase 1 OP "Clammbon", Case 2 OP "Tsumetai Kabe no Mukou ni", Case 3 OP "Koi Suru Kirigirisu", Case 0 OP "Into Gray", Case 1 ED "Bulganillo", Case 2 ED "Yoake no Katasumi de", Case 3 ED "Natsu no Time Capsule", Case 0 ED "Naida Umi no You ni"
English edition
English Restoration Patch (unofficial)
        Syawase Works' translation

        Full character list

        Character summary

        Arishima KaoruProtagonist
        Amei KannaProtagonist
        Olivia BerryMain character
        YonagiMain character
        Momonouchi SumomoMain character
        Hatano RinMain character
        Edward HarrisSide character
        Voiced by Sugisaki Ryou
        KikiSide character
        Voiced by Haruno Iroha
        Christopher MarloweSide character
        Voiced by Dentaku Nari
        John ShakespeareSide character
        Voiced by Sugisaki Ryou
        Thomas MorrisSide character
        Voiced by Impreza Jirou
        Harold SpencerSide character
        Leep-kunSide character
        Robert BakerSide character
        IzumoSide character
        Voiced by Haruno Iroha
        Arishima ShoukoSide character
        Voiced by Haruno Iroha
        Matsukaze AzukiSide character
        Voiced by Haruno Iroha
        Hatano ShuuhouSide character
        Watanabe MitsuoSide character
        Voiced by Dentaku Nari

        User stats

        Vote stats
        1095 votes (rank 224)
        8.49 average (rank 40)
        Recent votes(show all)
        22 reviews »


        Hakuchuumu no Aojashin - First Press Edition

        Screenshot sf140469Screenshot sf140480Screenshot sf140482Screenshot sf149671Screenshot sf149674Screenshot sf172563

        Hakuchuumu no Aojashin

        Screenshot sf160147

        Bairimeng de Gouxiangtu

        Screenshot sf159978Screenshot sf159979

        Hakuchuumu no Aojashin Restoration Patch

        Screenshot sf161598