Usotsuki Ouji to Nayameru Ohime-sama -Princess Syndrome-

うそつき王子と悩めるお姫さま –Princess syndrome–

Usotsuki Ouji to Nayameru Ohime-sama -Princess Syndrome-
TitleUsotsuki Ouji to Nayameru Ohime-sama -Princess Syndrome-
Original titleうそつき王子と悩めるお姫さま –Princess syndrome–
Aliasesうそつき王子と悩めるお姫さま –プリンセスシンドローム–, usomeru
LengthMedium (10 - 30 hours)
Publishers Whirlpool


It’s been two years since the mysterious disease “princess syndrome” had been made public. It affects young girls during puberty and the split personality-like symptoms range from mild to serious. In serious cases, she could become like a totally different person due to her wavering feelings and gain a special ability called ‘märchen’ which could cause great problems to those around her. To combat this problematic illness, all carriers (called ‘princesses’) were gathered at Saint Andersen Private School on the secluded island of Yumegashima. One day, a boy Yuuji came to the school. He was the ‘fake prince’ who could put a stop to their rampaging.

[From Hau~ Omochikaeri!]


Arisu Yuuji
Arisu Yuuji有須 祐二 
AliasesLiar Prince
Hair, Ahoge, Brown, Curtained, Spiky Bangs
Eyes, Blue
Body, Pale, Slim, Teen
Clothes, Armband, Bow Tie, Jacket, Necklace, School Uniform, Suit, T-shirt
Personality, Kind, Pretending, Proactive
Role, Childhood Friend, Classmate, Gamer, High School Student, Kouhai, Senpai, Transfer Student
Engages in, Cooking, Dancing, Erotic Massage, Fighting, Shopping, Swimming, Teasing
Subject of, Psychological Trauma, Time Loop
Engages in (Sexual), Anal Sex, Butterfly, Cowgirl, Cunnilingus, Doggy Style, Food Play, Incest, Missionary, Outdoor Sex, Piledriver, Quickie Fix, Reverse Cowgirl, Seventh Posture, Sex in Classroom, Sex in Public Places, Sitting Sex, Spoons, Standing Sex, Vaginal Fingering, Virgin Sex
Subject of (Sexual), Blowjob, Bodysponge, Boobjob, Facesitting, Hairjob, Handcuffed Sex, Handjob, Naizuri


Key Emotion: Sense of emptiness

The protagonist of the story who is a second-year student. He is fairly popular, has good grades and is good at sports. However, he has some trouble socializing with people due to the nickname "Liar Prince" he received when he was younger, which also became a kind of trauma for him. Yuji has the special power to counter those with "Princess Syndromes", as he is able to use his "Prince" powers to calm them down.

Main characters

Arisu Seiko
Arisu Seiko有須 星子 
MeasurementsHeight: 179cm, Bust-Waist-Hips: 94-68-95cm
Hair, Brown, Sidehair, Straight, Waist Length+
Eyes, Violet
Body, D Cup, Pale, Slim, Tall, Teen
Clothes, Beret, Bikini, Choker, Crown, Dress, Hairpin, Miniskirt, Off-The-Shoulder Shirt, Pajamas, Sailor Suit, School Uniform, Shorts, Tank Top, Thigh-high Stockings, Unusual Hair Ornaments
Personality, Brocon, Carefree, Energetic, Jealous, Loud, Otaku, Talkative, Third Person
Role, Daughter, Full Sister, Gamer, High School Student, Kouhai, Transfer Student, Younger Sister
Engages in, Dancing, Graduation, Moving, Swimming, Teasing
Subject of, Possession
Engages in (Sexual), Blowjob, Bodysponge, Boobjob, Handjob, Incest, Masturbation, Outdoor Sex, Sex in Public Places, Virgin Sex
Subject of (Sexual), Cowgirl, Doggy Style, Missionary, Sitting Sex, Standing Sex, Vaginal Fingering
Voiced byKiritani Hana


Key Emotion: Jealousy
Rank: A-rank

Yuuji's energetic younger sister who is a carrier, carrying Little Mermaid's spirit inside her. Originally not a resident on this island, Seiko is soon sent to her older brother as the story progresses, and allows the awakening of her own “Princess Syndrome”. Seiko is an extreme brocon who is really attached to her brother, and also considered the moodmaker of the group. Her trigger emotion is "jealousy", which allows her to "erase" things, especially clothes.

Koinokawa Rina
Koinokawa Rina恋ノ河 リイナ 
MeasurementsHeight: 158cm, Bust-Waist-Hips: 78-60-79cm
Hair, Blue, Short, Sidehair, Spiky Bangs
Eyes, Green
Body, A Cup, Average Height, Kemonomimi, Pale, Slim, Teen
Clothes, Beret, Decorative Belt, Hoodie, Jacket, Miniskirt, One Piece Swimsuit, Ribbon Hair Accessory, Ribbon Tie, Sailor Suit, School Uniform, Skirt, Tail, Tank Top, Thigh-high Stockings, Unusual Hair Ornaments
Items, Handbag, Stuffed Toy
Personality, Proactive, Stoic, Stubborn, Taciturn
Role, Classmate, Class President, Daughter, Discipline Committee Member, Gamer, High School Student, Kouhai, Senpai
Engages in, Shapeshifting, Shopping, Swimming, Teasing
Subject of, Child Abandonment, Possession
Engages in (Sexual), Facesitting, Handjob, Masturbation, Naizuri, Outdoor Sex, Sex in Classroom, Sex in Public Places, Virgin Sex
Subject of (Sexual), Anal Sex, Doggy Style, Missionary, Petplay, Spoons, Standing Sex
Voiced byMomoi Ichigo


Key Emotion: Loneliness
Rank: S-rank

Yuuji's classmate and his class president who is a carrier, carrying Cinderella's spirit inside her. Rina is also the leader of a group called “Caliber” (Spelled as “Council of the Wind”) in-game whose job is to patrol the island and stop any “Princess Awakenings”. Rina is softspoken and very stubborn. She enjoys multitasking (which she has named "everday's fastest ways") by doing many things at the same time, like reading a book while doing her business in the bathroom. Her favorite food is pork ramen.
Her trigger emotion is "loneliness", and being a "S-ranked princess" like Izumi, Rina's power is as dangerous: she has the power to make anything happen for just one hour. Despite this, she has very good control over her powers, and is often resisting awakening.

<hidden by spoiler settings>Rina's dream is to eradicate all adults out of the world because of her past, where her parents would often leave her alone to the point where she considered to be abandoned by them. Out of all the routes, Rina's is the only one that includes the main girl completely losing their princess syndrome.

Kurimiya Mikan
Kurimiya Mikan栗宮 みかん 
MeasurementsHeight: 145cm, Bust-Waist-Hips: 83-52-73cm
Hair, Red, Sidehair, Waist Length+
Eyes, Violet
Body, Average Height, E+ Cup, Pale, Slim, Teen
Clothes, Ankle Socks, Bikini, Clothing with Ribbons, Dress, Headband, Ribbon Hair Accessory, Sailor Suit, School Uniform, Sports Uniform
Items, Flute
Personality, Hardworker, Kind, Mature, Shy, Watashi
Role, Granddaughter, High School Student, Senpai
Engages in, Cooking, Shopping, Sports, Swimming
Subject of, Possession, Teasing
Engages in (Sexual), Blowjob, Boobjob, Food Play, Masturbation, Virgin Sex, Wake-up Sex
Subject of (Sexual), Cunnilingus, Missionary, Quickie Fix, Reverse Cowgirl, Seventh Posture, Vibrator
Voiced byFujisaki Usa


Key Emotion: Regret
Rank: B-rank

Yuuji's upperclassman who looks younger due to her short stature and who is a carrier, carrying Orihime's spirit inside her. She is very good at cooking and other household chores, and also mature, but naturally shy around other people. Her trigger emotion is "regret", which came from the regret of quitting playing the flute when she was younger, and which is also related to her grandfather. When she starts regretting something, she starts crying out lots of milk.

Tsukioka Izumi
Tsukioka Izumi月丘 泉 
MeasurementsHeight: 163cm, Bust-Waist-Hips: 84-61-86cm
Hair, Ankle Length, Blond, Curly, Long, Ponytail, Straight, Twin Tails, V Bangs
Eyes, Blue
Body, Average Height, C Cup, Pale, Slim, Teen
Clothes, Apron, Clothing with Ribbons, Knee-high Socks, Miniskirt, Naked Apron, Necklace, One Piece Swimsuit, Ribbon Hair Tie, Sailor Suit, School Uniform, Shirt, Skirt, Sundress, Thigh-high Stockings
Personality, Curious, Deredere, Food Lover, Sweets Lover
Role, Childhood Friend, Classmate, Daughter, High School Student, Kouhai, Lonely, Senpai, Wealthy
Engages in, Cooking, Fighting, Swimming
Subject of, Confinement, Possession, Teasing, Time Loop
Engages in (Sexual), Hairjob, Masturbation, Outdoor Sex, Sex in Public Places, Sixty-nine, Virgin Sex
Subject of (Sexual), Boobs on Glass, Butterfly, Cowgirl, Missionary, Piledriver, Standing Sex, Vaginal Fingering, Vibrator
Voiced byAnzu Mitsu


Key Emotion: Curiosity
Rank: S-rank

Izumi is Yuuji's childhood friend and classmate who is a carrier, carrying Rapunzel's spirit inside her. Her family is wealthy, and she is often treated around like a real princess to the extent where she was practically confined to her house. Due to this, she wasn't able to satisfy her curiosity, and to Izumi's luck (or misfortune), her trigger emotion is "curiosity". Being an “S-ranked Princess”, which means she is extremely dangerous, this curiosity transforms her into a wild and frantic girl craving to satisfy her desire to learn, and usually involves attacking the people who get in her way with her hair.

<hidden by spoiler settings>She later turns into an SS-ranked princess, and gains the ability to make the world loop (in other words, cause time loops).