Glass Heart Princess

Glass Heart Princess
TitleGlass Heart Princess
LengthMedium (10 - 30 hours)
DeveloperDesign Factory Co., Ltd. & Otomate
Publishers Idea Factory Co., Ltd.
Glass Heart Princess: Platinum
Shops» US$ 119.99 @ PlayAsia (bundle)


The protagonist is beautiful, smart, and good at sports. She is the perfect daughter of a respected family. However, she is suddenly stricken with a bizarre disease called "Glass Heart Syndrome". If her heart rate rises above normal, she will die. The only cure is to train her heart by experiencing heart-pounding situations through dating!


Himeno Kyouko
Himeno Kyouko姫乃 京子 
Hair, Brown, Long
Eyes, Violet
Body, Teen
Role, High School Student, Nameable, Ojousama
Subject of, Illness


17 years old. 3rd year high school student.
She's an attractive, athletic, and smart superwoman. However she isn't prideful about it and treats everybody around her as an equal.
She is suddenly struck by the mysterious disease "Glass Heart Syndrome" where any sudden excitement could cause her to go into cardiac arrest.

Main characters

Asahina Tenma
Asahina Tenma朝比奈 天馬 
Hair, Black, Long, Multicolored, Orange, Short
Eyes, Red
Body, Pointed Ears, Young-adult
Role, Cook, Medical Doctor, Teacher, Vampire
Voiced byHatano Wataru


The health doctor at the protagonist's school, however he also has teaching certificates for all subjects. At lunchtime he's the cafeteria chef, after school he's the janitor he's a Super All Rounder Teacher.
Because of this one of the schools seven mysteries is that he is a group of sextuplets.

Doumyouji Gai
Doumyouji Gai道明寺 凱 
Hair, Ahoge, Eye Covering, Short, Violet
Eyes, Hidden
Body, Kid
Personality, Shy
Role, Betrothed, Wealthy
Voiced byMatsuoka Yoshitsugu


10 years old.
The protagonist's fiance. He's the son of a rather well off family.
To be honest the protagonist's father is the only one who talks about the betrothal and he's not very convincing.
But even if it might be a mistake Gai himself wants to get married.

Hoshino Kanata
Hoshino Kanata星野 彼方 
Hair, Eye Covering, Green, Ponytail, Waist Length+
Eyes, Blue, Heterochromia, Tareme
Body, Young-adult
Clothes, Earrings
Personality, Eccentric
Role, Extraterrestrial, Robot
Voiced byMiyata Kouki


A boy the protagonist met underneath the "Legendary Tree".
He's rather eccentric, but somehow his presence is weak and he doesn't get talked about much.
The alien on his shoulder seems to be a stuffed animal, but sometimes it can be seen talking and moving.

Karasuma Yukito
Karasuma Yukito烏丸 幸斗 
Hair, Blue, Shoulder-length
Eyes, Blue
Body, Teen
Personality, Stoic
Role, Delinquent, High School Student, Transfer Student
Voiced bySuzuki Tatsuhisa


18 years old.
A strangely cool delinquent type guy. He transferred into the protagonist's school last year.

Masaki Shinnosuke
Masaki Shinnosuke柾木 真之介 
Hair, Ahoge, Black, Short
Eyes, Blue
Body, Young-adult
Role, Bodyguard, Butler
Voiced byKENN


A young man who works as the protagonist's butler and bodyguard.
No matter the difficult task, if it is his master's order he will complete it perfectly.
However whenever the protagonist gets mad at him his Hetare Switch gets flipped and he becomes completely useless.

Side characters

Chiga Satsuki
Chiga Satsuki千賀 皐月 
Hair, Grey, Long
Eyes, Amber
Body, Young-adult
Clothes, Maid's Dress, Maid's Headdress
Personality, Otaku
Role, Maid
Voiced byHonda Mariko


The protagonist's maid.
She's a bit of an otaku and tries to help the protagonist in her love pursuits by recommending shoujo manga and romance movies.

Himeno Monji
Himeno Monji姫乃 門治 
Hair, Brown, Goatee, Moustache, Short
Eyes, Amber
Body, Adult
Clothes, Kimono
Role, Executive, Father
Voiced byInaba Minoru


The protagonist's father who is the president of a corporate giant.

Miu / Manaka / Saki
Miu / Manaka / Saki美羽/愛佳/早希 
Hair, Blue, Brown
Eyes, Blue, Brown
Body, Teen
Role, High School Student, Kouhai
Voiced byMochizuki Rei (Saki)
Oonishi Saori (Manaka)
Taneda Risa (Miu)


Admiring lowerclassmen of the protagonist.
They are very close and always do things together.
From left to right they are Miu, Manaka, and Saki.