Touhou Koumakyou: Embodiment of Scarlet Devil Boss Guides#
Embodiment of Scarlet Devil has 7 bosses in total, fought in this order: Rumia, Cirno, Hong Meiling, Patchouli Knowledge, Sakuya Izayoi, Remilia Scarlet, and Flandre Scarlet on the Extra stage. This chapter lists the verified spell cards for each boss and covers the general rules that apply to every boss fight.
General Boss Fight Rules#
Core rules drawn from the official materials that apply to every boss fight:
- Multi-bar health system: Each boss has multiple health bars; spell cards and regular attacks alternate, and emptying one bar pushes the fight into its next phase.
- Spell cards have a hard time limit: Every spell card runs on a timer, and when it expires the boss switches to the next spell card.
- No reward for timing out: The spell card bonus is only awarded if you deplete the health bar within the time limit without getting hit and without using a bomb; simply surviving until the timer runs out pays out nothing.
- Non-spell phases still need attention: Bosses don’t only attack during spell cards — the bullet patterns in regular attack phases are just as lethal.
Stage 1 Boss: Rumia#
A youkai of Misty Lake; she serves as both the midboss and the boss of this stage. Verified spell cards:
| Spell Card | Notes |
|---|---|
| Moon Sign “Moonlight Ray” | Midboss spell card, Hard/Lunatic only |
| Night Sign “Night Bird” | |
| Darkness Sign “Demarcation” |
There is a known bug tied to “Night Bird”: on Easy, a non-spell timeout can trigger this card when it should never appear at all. See the bug list on the Game Progress page.
Stage 2 Boss: Cirno#
An ice fairy who appears over the lake; the midboss is Daiyousei. Verified spell cards:
| Spell Card | Notes |
|---|---|
| Ice Sign “Icicle Fall” | One of the most famous beginner spell cards in the game |
| Hail Sign “Hailstorm” | Hard/Lunatic only |
| Frozen Sign “Perfect Freeze” | |
| Snow Sign “Diamond Blizzard” |
Stage 3 Boss: Hong Meiling#
Gatekeeper of the Scarlet Devil Mansion’s outer gate; she is both the midboss and the boss of this stage. Verified spell cards:
| Spell Card | Notes |
|---|---|
| Flower Sign “Gorgeous Sweet Flower” | Midboss spell card |
| Flower Sign “Selaginella 9” | Midboss spell card |
| Rainbow Sign “Colorful Rainbow Wind Chime” | On Lunatic there is a bug where items cap at 512 and point items stop dropping |
| Illusion Sign “Imaginary Flower Yumekazura” | |
| Color Sign “Colorful Rain” | |
| Color Sign “Vivid Chaotic Dance” | |
| Color Sign “Dazzling Color Typhoon” |
Stage 4 Boss: Patchouli Knowledge#
The mistress of the library, with Koakuma as the midboss. Her defining trait is that her spell cards change with the player’s shot type — on the same difficulty, the four loadouts face different spell card combinations. Verified spell cards:
| Spell Card | Notes |
|---|---|
| Fire Sign “Agni Shine” | |
| Water Sign “Princess Undine” | |
| Wood Sign “Sylphy Horn” | |
| Water Sign “Bury In Lake” | |
| Wood Sign “Green Storm” | |
| Metal Sign “Silver Dragon” | |
| Fire & Earth Sign “Lava Cromlech” | |
| Wood & Fire Sign “Forest Blaze” | |
| Water & Wood Sign “Water Elf” | |
| Metal & Water Sign “Mercury Poison” | |
| Earth & Metal Sign “Emerald Megalith” |
For the Extra difficulty bug tied to “Silent Selene”, see the known-issues list on the progress page.
Stage 5 Boss: Sakuya Izayoi#
Chief maid of the Scarlet Devil Mansion; she is both the midboss and the boss of this stage. Verified spell cards:
| Spell Card | Notes |
|---|---|
| Magic Trick “Misdirection” | |
| Magic Trick “Mesmerizing Misdirection” | Midboss spell card |
| Illusion Existence “Clock Corpse” | |
| Illusion Image “Luna Clock” | |
| Maid Secret Skill “Manipulating Doll” | |
| Illusion Ghost “Jack the Ludo Bile” | |
| Illusion World “The World” | |
| Maid Secret Skill “Killing Doll” | |
| Magic Trick “Eternal Meek” | Stage 6 midboss spell card |
Stage 6 Boss: Remilia Scarlet#
Mistress of the Scarlet Devil Mansion and the final boss of the main game. Stage 6 runs “Sakuya (midboss, Eternal Meek) → Remilia”, making it the longest back-to-back boss sequence in the main story. Verified spell cards:
| Spell Card | Notes |
|---|---|
| Divine Punishment “Star of Vanities” | Originally named “Star of David” in the original release; renamed in the reprint version |
| Dark Sign “Scarlet Netherworld” | |
| Curse “Curse of Vlad Tepes” | |
| Scarlet Sign “Scarlet Shoot” | |
| “Red Magic” | |
| Divine Punishment “Young Demon Lord” | Hard/Lunatic only |
| Hell Sign “Mountain of a Thousand Needles” | |
| Divine Art “Vampire Illusion” | |
| Scarlet Sign “Scarlet Meister” | |
| “Scarlet Gensokyo” | Final spell card |
One known bug relates to the final spell card: when Remilia’s or Flandre’s final spell card times out and a bomb has been used, a leftover bat-form remnant may remain on screen.
Extra Stage Boss: Flandre Scarlet#
Remilia’s younger sister, who has lived in the basement of the Scarlet Devil Mansion for years — she states in the game’s dialogue that she “hasn’t left the basement once in the past 495 years”, and her final spell card QED “Ripples of 495 Years” echoes that backstory. The midboss is Patchouli. Verified spell cards:
| Spell Card | Notes |
|---|---|
| Taboo “Cranberry Trap” | |
| Taboo “Lævateinn” | |
| Taboo “Kagome, Kagome” | |
| Taboo “Maze of Love” | |
| Forbidden Barrage “Starbow Break” | |
| Forbidden Barrage “Catadioptric” | |
| Forbidden Barrage “Clock that Ticks Away the Past” | |
| Secret Barrage “And Then Will There Be None?” | |
| QED “Ripples of 495 Years” | The 64th spell card of the entire game, numbered Spell Card 64 |
For the unlock conditions and preparation tips for the Extra stage, see the Extra Stage page.
Spell Card Total for the Whole Game#
Across the 6 main stages plus the Extra stage, enemy spell cards total 64 (numbered Spell Card 01 through 64), with the last one being QED “Ripples of 495 Years” from the table above. The cards listed in this chapter are the ones verified item by item for this guide; for the complete roster of the few difficulty-exclusive spell cards, defer to the official materials.