Sleepy Princess in the Demon Castle poster

Best Episodes Of Sleepy Princess in the Demon Castle

Overall Rating: ★ 7.5

Best Episodes Of Sleepy Princess in the Demon Castle

(Overall Rating: ★ 7.5)

Episode Ratings & Analysis

Discover the best and most memorable episodes of Sleepy Princess in the Demon Castle, from fan favorites to critically acclaimed moments. Explore detailed ratings, episode summaries, and visualize how the show's quality evolved over time.

Syalis is a princess. A really cute one. When she gets kidnapped by the Demon King as a hostage, she's stuck in a castle full of demons, waiting to be rescued by her knight in shining armor. So what does she do? What any of us would. Take a nap—on a pillow she fashioned from her Teddy Demon guards. Duh.

1 Seasons
12 Episodes
Ended
Animation Comedy Sci-Fi & Fantasy
Best Episodes
S1E7 - Even More Sleepless Princess of the Castle ★ 8.3
S1E9 - The Princess and Hostage Training Week ★ 8.3
S1E12 - Sleeping Princess of the Demon Castle ★ 8.0
Worst Episodes
S1E1 - Sleepless Princess of the Castle ★ 7.4
S1E4 - The Princess, Destruction, and a Short Journey ★ 7.4
S1E2 - The Princess and Furious Fluff ★ 7.5
★ 8.3/10 (49 votes)
#1

Even More Sleepless Princess of the Castle

S1:E7

Princess Syalis wakes to find herself in a completely different castle! What happened and how will she return to the Demon Castle?

★ 8.3/10 (49 votes)
#2

The Princess and Hostage Training Week

S1:E9

It’s time for Princess Syalis to start acting like a proper hostage, so the demon king issues a decree to help change that.

★ 8.0/10 (43 votes)
#3

Sleeping Princess of the Demon Castle

S1:E12

Despite living as a captive in the Demon Realm, the princess writes a letter to Santa. The letter’s contents shock the demon king.

★ 7.9/10 (41 votes)
#4

The Princess in Endopolis

S1:E10

Princes Syalis is determined to get her hands on the latest and greatest sleep product, but it’s only available in the Human Realm.

★ 7.8/10 (45 votes)
#5

The Princess’ Unwavering Choice

S1:E6

Dawner the Hero is having more trouble than expected on his journey to the Demon Castle, so the demon higher ups decide to take some action.

★ 7.8/10 (42 votes)
#6

The Princess and the Frightful Demon Nightmare

S1:E8

Back at the Demon Castle, Princess Syalis interrupts an important meeting to share about her haunted dreams.

★ 7.6/10 (42 votes)
#7

The Princess and Troubling Dreams

S1:E11

Princess Syalis feels tired no matter how much sleep she gets, and her troubling dreams aren’t helping.

★ 7.5/10 (49 votes)
#8

The Princess and Furious Fluff

S1:E2

As Dawner the Hero faces perilous obstacles to rescue Princess Syalis, the princess continues to find creative ways to sleep more comfortably at the Demon Castle.

★ 7.5/10 (48 votes)
#9

The Princess and Forbidden Knowledge

S1:E3

Princess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.

★ 7.5/10 (44 votes)
#10

The Princess and Female Warriors

S1:E5

The female unit, long deployed out in the field, has returned to the Demon Castle to get their first taste of Princess Syalis.

★ 7.4/10 (60 votes)
#11

Sleepless Princess of the Castle

S1:E1

Princess Syalis is abducted from her home of the Nation of Goodereste by Twilight the Demon King. Despite the horrors lurking in the Demon Castle, all Princess Syalis wants is a good night’s sleep.

★ 7.4/10 (46 votes)
#12

The Princess, Destruction, and a Short Journey

S1:E4

Fed up with her circumstances at the Demon Castle, Princess Syalis goes to great lengths to add luxuries to her castle prison.

★ 7.4/10 (60 votes)
#1

Sleepless Princess of the Castle

S1:E1

Princess Syalis is abducted from her home of the Nation of Goodereste by Twilight the Demon King. Despite the horrors lurking in the Demon Castle, all Princess Syalis wants is a good night’s sleep.

★ 7.4/10 (46 votes)
#2

The Princess, Destruction, and a Short Journey

S1:E4

Fed up with her circumstances at the Demon Castle, Princess Syalis goes to great lengths to add luxuries to her castle prison.

★ 7.5/10 (49 votes)
#3

The Princess and Furious Fluff

S1:E2

As Dawner the Hero faces perilous obstacles to rescue Princess Syalis, the princess continues to find creative ways to sleep more comfortably at the Demon Castle.

★ 7.5/10 (48 votes)
#4

The Princess and Forbidden Knowledge

S1:E3

Princess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.

★ 7.5/10 (44 votes)
#5

The Princess and Female Warriors

S1:E5

The female unit, long deployed out in the field, has returned to the Demon Castle to get their first taste of Princess Syalis.

★ 7.6/10 (42 votes)
#6

The Princess and Troubling Dreams

S1:E11

Princess Syalis feels tired no matter how much sleep she gets, and her troubling dreams aren’t helping.

★ 7.8/10 (45 votes)
#7

The Princess’ Unwavering Choice

S1:E6

Dawner the Hero is having more trouble than expected on his journey to the Demon Castle, so the demon higher ups decide to take some action.

★ 7.8/10 (42 votes)
#8

The Princess and the Frightful Demon Nightmare

S1:E8

Back at the Demon Castle, Princess Syalis interrupts an important meeting to share about her haunted dreams.

★ 7.9/10 (41 votes)
#9

The Princess in Endopolis

S1:E10

Princes Syalis is determined to get her hands on the latest and greatest sleep product, but it’s only available in the Human Realm.

★ 8.0/10 (43 votes)
#10

Sleeping Princess of the Demon Castle

S1:E12

Despite living as a captive in the Demon Realm, the princess writes a letter to Santa. The letter’s contents shock the demon king.

★ 8.3/10 (49 votes)
#11

Even More Sleepless Princess of the Castle

S1:E7

Princess Syalis wakes to find herself in a completely different castle! What happened and how will she return to the Demon Castle?

★ 8.3/10 (49 votes)
#12

The Princess and Hostage Training Week

S1:E9

It’s time for Princess Syalis to start acting like a proper hostage, so the demon king issues a decree to help change that.

★ 7.4/10 (60 votes)

Sleepless Princess of the Castle

S1:E1

Princess Syalis is abducted from her home of the Nation of Goodereste by Twilight the Demon King. Despite the horrors lurking in the Demon Castle, all Princess Syalis wants is a good night’s sleep.

★ 7.5/10 (49 votes)

The Princess and Furious Fluff

S1:E2

As Dawner the Hero faces perilous obstacles to rescue Princess Syalis, the princess continues to find creative ways to sleep more comfortably at the Demon Castle.

★ 7.5/10 (48 votes)

The Princess and Forbidden Knowledge

S1:E3

Princess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.

★ 7.4/10 (46 votes)

The Princess, Destruction, and a Short Journey

S1:E4

Fed up with her circumstances at the Demon Castle, Princess Syalis goes to great lengths to add luxuries to her castle prison.

★ 7.5/10 (44 votes)

The Princess and Female Warriors

S1:E5

The female unit, long deployed out in the field, has returned to the Demon Castle to get their first taste of Princess Syalis.

★ 7.8/10 (45 votes)

The Princess’ Unwavering Choice

S1:E6

Dawner the Hero is having more trouble than expected on his journey to the Demon Castle, so the demon higher ups decide to take some action.

★ 8.3/10 (49 votes)

Even More Sleepless Princess of the Castle

S1:E7

Princess Syalis wakes to find herself in a completely different castle! What happened and how will she return to the Demon Castle?

★ 7.8/10 (42 votes)

The Princess and the Frightful Demon Nightmare

S1:E8

Back at the Demon Castle, Princess Syalis interrupts an important meeting to share about her haunted dreams.

★ 8.3/10 (49 votes)

The Princess and Hostage Training Week

S1:E9

It’s time for Princess Syalis to start acting like a proper hostage, so the demon king issues a decree to help change that.

★ 7.9/10 (41 votes)

The Princess in Endopolis

S1:E10

Princes Syalis is determined to get her hands on the latest and greatest sleep product, but it’s only available in the Human Realm.

★ 7.6/10 (42 votes)

The Princess and Troubling Dreams

S1:E11

Princess Syalis feels tired no matter how much sleep she gets, and her troubling dreams aren’t helping.

★ 8.0/10 (43 votes)

Sleeping Princess of the Demon Castle

S1:E12

Despite living as a captive in the Demon Realm, the princess writes a letter to Santa. The letter’s contents shock the demon king.

Season Average Rating Episodes Best Episode Worst Episode
1 ★ 7.7 12
★ 8.3 Even More Sleepless Princess of the Castle
★ 7.4 Sleepless Princess of the Castle
Inori Minase
Kaito Ishikawa
Yoshitsugu Matsuoka
Hiro Shimono
+2
Cast & Crew

View all 6 cast members and crew