Season 1 Episodes12

E1 7.5

Sleepless Princess of the Castle

E2 7.6

The Princess and Furious Fluff

E3 7.7Now viewing

The Princess and Forbidden Knowledge

E4 7.7

The Princess, Destruction, and a Short Journey

E5 7.7

The Princess and Female Warriors

E6 8.0

The Princess’ Unwavering Choice

E7 8.4

Even More Sleepless Princess of the Castle

E8 7.9

The Princess and the Frightful Demon Nightmare

E9 8.3

The Princess and Hostage Training Week

E10 8.0

The Princess in Endopolis

E11 7.8

The Princess and Troubling Dreams

E12 8.2

Sleeping Princess of the Demon Castle

Cast17

Inori Minase

Princess Syalis (voice)

Kaito Ishikawa

Demon Cleric (voice)

Yoshitsugu Matsuoka

Demon King Tasogare (voice)

Hiro Shimono

The Hero Akatsuki (voice)

Rikiya Koyama

Majiro the Hedgehog (voice)

Kouichi Souma

Frankenzombie (voice) / Ghost Wrapping Paper (voice)

Junichi Suwabe

Caesar Magician (voice)

Shinya Takahashi

Goblin Serf (voice)

Chikahiro Kobayashi

Red Siberian (voice)

Sayaka Ohara

Harpy (voice)

Ayane Sakura

Aladdif (voice)

Takeo Otsuka

Poseidon (voice)

Crew1

Yoshiko Nakamura

Writer

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Episode Summary

"The Princess and Forbidden Knowledge" is episode 3 of Sleepy Princess in the Demon Castle season 1. It scored 7.7/10 from 64 votes, ranking #8 of 12 episodes this season (season average 7.9). Written by Yoshiko Nakamura, it aired on October 20, 2020.