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The Scarlet Tale of Phantom Mist [English, Ver1.2]

1. Introduction

This is a fan-made game born out of the creator’s deep affection for Patchouli Knowledge—
so much so that Patchouli and Koakuma became the main protagonists.
Before playing, please take a moment to read the following notes.

2. Overview

This is a Touhou Project derivative work, inspired primarily by Embodiment of Scarlet Devil
and Touhou Artificial Dream in Arcadia (hereafter ADiA).
Patchouli and Koakuma set out together to resolve a new incident.

3. Notes

(1)The author is not fluent in English, so the English translation relies on machine translation.
Please play only if you don’t mind occasional unnatural wording.

(2)Regarding items (3) and (4) below, explicit permission has been obtained from
Potemki11, the creator of ADiA.

(3)This game contains spoilers for ADiA.
It is strongly recommended to play it after finishing ADiA.

(4)This work adds independent interpretations to the story of ADiA.
It is a fan work and not officially related to the original game.

4. Story

One day, in Gensokyo, a massive tower known as the Monolith of Dreamers suddenly appeared—
alongside mysterious doppelgängers of Gensokyo’s residents called Sleepers.
A Japanese high school girl, Sumireko Usami, uses her psychic abilities and a special app
that allows her to control Sleepers, working tirelessly to resolve the strange phenomenon.

At the top of the Monolith, the final battle was about to begin—

Meanwhile, far away in the Scarlet Devil Mansion, home to vampires,
another quiet disturbance had begun to stir.
Unaware of it all, Patchouli Knowledge, the mansion’s resident witch,
set out with her familiar Koakuma to visit Kourindou,
hoping to purchase a certain rare item…

5. Main Characters and Terms

Patchouli Knowledge
A witch who resides in the Scarlet Devil Mansion’s vast library.
Known as the “Unmoving Great Library.”
Gifted in magic but physically frail. Close friend of Remilia.
Ability: Manipulation of magic.
(Note: Guns do not appear in this game, and Patchouli cannot equip them.)

Koakuma
Patchouli’s familiar and the librarian of the Scarlet Devil Mansion.
Though unnamed, she is affectionately called “Koa” by the other residents.
Ability: Locating desired books.

Remilia Scarlet
The mistress of the Scarlet Devil Mansion, a vampire about 500 years old.
Known as the “Eternally Young Scarlet Moon.”
Proud and selfish, yet well respected by her household.
Ability: Manipulation of fate.
Previously caused the Scarlet Mist Incident.

Scarlet Devil Mansion
A Western-style mansion standing on the shore of the Misty Lake.
Home to the “Scarlet Devil” vampire, powerful youkai,
and numerous fairy maids and hobgoblins serving as attendants.

The Scarlet Mist Incident
An event once caused by the mansion’s inhabitants,
where a red mist enveloped Gensokyo, blocking out sunlight.
It was resolved after Reimu Hakurei, the shrine maiden, punished those responsible.

6. Major Differences from ADiA

(1)Sleepers
Several new Sleepers have been added.

(2)Levels and Stats
The most significant change.
Nearly all Sleeper levels and parameters have been rebalanced.
Their strength roughly follows the stage order from the original Touhou games (including PC-98 titles):
e.g. Stage 1 Boss < Stage 2 Boss < … < Stage 6 Boss < EX Boss (with some exceptions).
Examples: Rumia (Lv 33 → 18), Meiling (Lv 16 → 41), Remilia (Lv 17 → 75)

(3)Hijacking
Instead of a bullet-hell mechanic, success or failure is determined by probability.
Reducing the target’s HP beforehand increases success rate.

(4)Fusion
Patchouli functions as the equivalent of Sumireko in ADiA —
can freely allocate parameters and inherit elements.
Koakuma is treated as a fixed character.
She can inherit skills, but cannot be used as fusion material,
inherit elements, or gain EXP from sacrificial fusion.

(5)App Upgrades
In ADiA, upgrades were purchased at terminals.
Here, that feature is disabled — but several upgrades are available from the start:
① Party size +12
② SP gain on Guard
③ Fusion level cap +10
④ Display enemy HP during battle
⑤ Display resistances for registered Sleepers

(6)Battery Consumption
Summoning Sleepers does not drain battery while walking.

(7)Game Over Conditions
The game does not end when Patchouli is defeated.
A full wipe occurs only when all active members are downed.

(8)Experience Distribution
All allies, including non-summoned ones, gain experience after battle.

7. Game Length

Even with smooth progress, it will likely take around 20 hours to defeat all bosses.

8. BGM and Composers

ajapa http://ajapabgm.html.xdomain.jp/
aocha https://blueinbrown.booth.pm/items/1335152
D+D https://commons.nicovideo.jp/works/nc214439
goth https://commons.nicovideo.jp/works/nc264279
SciΦ https://commons.nicovideo.jp/works/nc312731?rf=nvpc&rp=watch&ra=video_detail
SciΦ https://commons.nicovideo.jp/works/nc291656
Xe https://xenoglossy.hariko.com/music.html
YouFulca https://youfulca.com/category/music_assets/touhou/
Shiratori Koyomi https://commons.nicovideo.jp/works/nc1687211
Mirufi https://commons.nicovideo.jp/works/agreement/nc153942
Mirufi http://locossic.starfree.jp/list
Mirufi http://locossic.starfree.jp/mq?p=music#102
Mirufi https://commons.nicovideo.jp/works/nc149096
Rau https://commons.nicovideo.jp/works/agreement/nc142646
Rubai https://www.nicovideo.jp/user/2954101/video?ref=pc_userpage_menu
Shouma (Toboso) https://commons.nicovideo.jp/works/nc186763