Fics like Imposter Syndrome

A new human appears in the Demon Castle that bears a striking resemblance to the Demon King's first love. Suddenly, Syalis finds herself without allies and being treated as an actual hostage. Will she be able to convince anyone to help her? Or will she be the imposter's next victim?

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1. No Rest For The Princess by Mellize (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))
2. Helpless to Serve by unlockthelore (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga))
3. And a Teddy Demon in a Pear Tree by MarshmallowBirb (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga))
4. A Series of Calls by Mellize (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))
5. The Daily Life of a Househusband by Mellize (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))
6. Mulled Wine Soliloquy by dariattic (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga))
7. After the End, Without You by MarshmallowBirb (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga))
8. To be Equals by Mellize (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))
9. This Christmas (and the next, and the next...) by MarshmallowBirb (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga))
10. Scarf by Mellize (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))
11. I’m the captive princess, so I will be enjoying my stay at the demon castle by dariattic (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga))
12. Desire & Restraint by Mellize (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))
13. The Butcher and the Cleric by cyan96 (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga))
14. Papers In The Containment Jar by Mellize (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))
15. Well-Meaning by Mellize (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))
16. Lively Duke’s Daughter in the Demon Castle by ThoughtSpinner (乙女ゲームの破滅フラグしかない悪役令嬢に転生してしまった… - 山口悟 | My Next Life as a Villainess - Yamaguchi Satoru (Light Novels), 乙女ゲームの破滅フラグしかない悪役令嬢に転生してしまった… | My Next Life as a Villainess (Anime), more)
17. Slipping Away Again by Mellize (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))
18. Hostage situations aren't supposed to be cute by WallofBurningRoses (Dream SMP, Minecraft (Video Game), more)
19. Syalis Finds A Spouse by AimingSashimiG (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))
20. Looking More (REDACTED) By The Day by Mellize (魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Manga), 魔王城でおやすみ | Maoujou de Oyasumi | Sleepy Princess in the Demon Castle (Anime))