History VideoGame / TouhouKoumakyouTheEmbodimentOfScarletDevil

* NoNameGiven: Since this game (like past ones) do not show the boss's name during gameplay, and the Stage 2 and 4 midbosses do not have any dialogue to introduce them, this leaves those bosses canonically nameless.

The first game for Windows [=PCs=], ''[=EoSD=]'' was designed as [[ContinuityReboot a fresh start]] from the UsefulNotes/PC98 era, trimming down the cast to protagonists Reimu and Marisa,[[note]]The former of whom also had the spelling of her name changed from 靈夢 to 霊夢[[/note]] renaming the setting from "Eastern Country" to "Gensokyo", and introducing the iconic Spell Card mechanic. [[EarlyInstallmentWeirdness However]], it wouldn't be until [[VideoGame/TouhouYouyoumuPerfectCherryBlossom its sequel]] that the modern ''Touhou'' franchise was fully formed.

** While this game introduces the Item Get Border Line that [[PowerUpMagnet draws all items on screen towards you]] when you go above it, it only works when you're at max power. It's not until [[VideoGame/TouhouFuujinrokuMountainOfFaith the tenth game]] that the item border is always active without any conditions.[[note]]Albeit [[VideoGame/TouhouYouyoumuPerfectCherryBlossom the seventh game]] had it always active in the Extra and Phantasm stages, while [[VideoGame/TouhouEiyashouImperishableNight the eighth game]] had it always active when playing as Magic Team.[[/note]]

* ActionCommands: ''[=EoSD=]'' introduces the "deathbomb" mechanic - after being struck by an enemy attack, the player has a small window in which they can escape death by activating their SmartBomb.

-->'''Marisa:''' Wait, you don't know? She got married and then there were none.

-->'''Marisa:''' I'll introduce ya to a girl from the shrine.

* MergingTheBranches: While [[CuttingOffTheBranches Reimu is the one who solved the incident]], it's canon that both Reimu and Marisa set off to the Scalet Devil Mansion during the events of this game; the book ''Perfect Memento in Strict Sense'' states Reimu solved the Scarlet Mist Incident on her own, but in ''[[VideoGame/TouhouEiyashouImperishableNight Imperishable Night]]'', it's implied in the Spell Practice flavor text that Marisa based her Non-Directional Laser on Patchouli's nonspells from this game, meaning she stormed the mansion on her own as well and at the very least fought Patchouli.

--> The elf that's referred to here is not the one with the pointy ears but the fairy. There's no meaning to this.
Is spirit that's not a fairy not charming?

--> The elf that's referred to here is not the one with the pointy ears but the fairy. There's no meaning to this.
Is spirit that's not a fairy not charming?

--> The elf that's referred to here is not the one with the pointy ears but the fairy. There's no meaning to this.
Is spirit that's not a fairy not charming?
* EarlyInstallmentWeirdness:

** You can't see your hitbox by focusing.
** The concept of the [[FantasticNatureReserve Great Hakurei Barrier]] hasn't yet been introduced - Reimu's profile describes her as keeping {{youkai}} from wandering outside Gensokyo, and keeping humans from wandering in.

** The game being a ContinuityReboot was only something established retroactively, with Reimu and Marisa's profiles still directly referring to them as being the same characters in the PC-98 games.
** The tone of the game's dialogue is extremely farcical, with many exchanges consistently entirely of intentionally nonsensical wordplay and {{Shout Out}}s. This would gradually be phased out over the following games in favour of more straight exposition.
** Characters were as disposable as in the PC-98 games. ZUN would later regret that he [[https://en.touhouwiki.net/wiki/Strange_Creators_of_Outer_World/Who%27s_Who_of_Humans_%26_Youkai_in_Gensokyo/Reisen_Udongein_Inaba_and_Tewi_Inaba "hadn't really put any thought into"]] either Koakuma or Daiyousei, especially since the fandom [[OCStandIn had to invent their personalities]] for him.[[note]]Unnamed midbosses would make infrequent appearances after EoSD, but were made non-humanoid. The shortage of characters in the canon following [=EoSD=] had fans uniquely latch onto humanoid Koakuma and Daiyousei.[[/note]]