Hiiro no Kakera (緋色の欠片, loosely translated into English as Scarlet Fragment), is a Japanese visual novel created by Idea Factory directed at the female market, known as an otome game. Released on July 6, 2006 for the PlayStation 2, the protagonist is a teenage girl who revisits a small village she remembers from her childhood and gets caught up in her family's history and supernatural dangers surrounding it. The Japanese anime television series was premiered in April 2012.
The protagonist is a teenage girl (Tamaki) who revisits a small village she remembers from her childhood and gets caught up in her family's history and the supernatural dangers surrounding it.
While walking along the hillsides waiting for the person who her grandmother sent to fetch Tamaki to the village, Tamaki comes across a small, white round object with sticks for limbs and talks. It runs off soon after, with Tamaki chasing after it. Soon Tamaki finds herself in a place where ‘it doesn’t feel like the world I came from’. She gets attacked by three slime creatures, and a male comes charging in to save her - by clamping his hands around her body and mouth and telling her to be quiet. After the young man (Takuma) saves he walks her to the village where her grandmother is staying. Soon after her arrival she meets with her grandmother, which is soon explained that she has to continue the role of ancestor princess Tamayori, to seal the sword Onikirimaru with the help of her five guardians.
- Tamaki Kasuga (春日珠紀 Kasuga Tamaki)
- Voiced by: Marie Miyake
- The main character. She is the next Tamayorihime after her grandmother. She gets a headache, whenever something happens to the Onikimaru seals. Her hobby is visiting shrines & temples.
- Takuma Onizaki (鬼崎拓磨 Onizaki Takuma)
- Voiced by: Tomokazu Sugita
- The first guardian the main character meets and also her classmate. Has powerful strength. Is quite slow. His hobby is doing crosswords and he likes eating taiyaki. He is the descendant of the oni, whose power is very hard to control, especially when near the sealed magical sword Onikirimaru.
- Mahiro Atori (鴉取真弘 Atori Mahiro)
- Voiced by: Kousuke Okano
- An upperclassman of the main character and one of the five guardians. Mahiro is the descendent of the raven and can control the wind. He is extremely self-conscious when it comes to his height. Usually very loud and energetic and can act immature. However when needs be he can show a serious and deep side. Likes women with big breasts. Loves motorbikes, meat & fried noodle buns.
- Yuuichi Komura (狐邑祐一 Komura Yuuichi)
- Voiced by: Daisuke Namikawa
- An upperclassman of the main character and another of the five guardians. Yuuichi is the descendent of the nine-tailed fox and specializes in using illusions and spirit fire. He is very quiet and can be emotionless. Likes spacing out and has the ability to sleep anywhere at anytime. His hobby is just relaxing & laying on the grass in the sun.
- Shinji Inukai (犬戒慎司 Inukai Shinji)
- Voiced by: Hiroki Shimowada
- One grade below the main character and another guardian. Shinji has the power of healing (kaifuku) and can use the power of words to control things. His hobby is cooking & is skilled at it.
- Suguru Oomi (大蛇卓 Oomi Suguru)
- Voiced by: Daisuke Hirakawa
- Unofficial leader of the guardians and descendent of the giant snake. The tactician of the group and can also create powerful seals and barriers. Also controls water. He is very polite and reliable but has a childish side. Is usually seen smiling. Loves tea and teaches calligraphy.
- Ryou Kutani (狗谷遼 Kutani Ryou)
- Voiced by: Kazunori Nomiya
- He is in the same year as Tamaki and Takuma but he is actually one year older than them. He is a lone wolf and does as he pleases. He has a penchant for sniffing Tamaki which is due to his powers.
- Aria Rozenburg (アリア・ローゼンブルグ)
- Voiced by: Tomomi Isomura
A young girl with long blonde hair and blue eyes. Logos believes that she is the sacred maiden blessed by God. She can neutralise all magical attacks and bless spirits. Aria speaks in an adult-like manner but sometimes acts like a child (though she denies she is one).
- Eins (アイン)
- Voiced by: Hiroki Yasumoto
An aide to Aria. His codename is one in German. He has super strength and specialises in close range combat.
- Zwei (ツヴァイ)
- Voiced by: Yoshihisa Kawahara
An aide to Aria. His codename is two in German. Zwei fights with a scythe and likes to eat his opponents' souls. Mahiro calls him "Shinigami".
- Drei (ドライ)
- Voiced by: Youji Ueda
An aide to Aria. His codename is three in German. Drei is a magician and can summon dark spirits to fight. He is very interested in research and regards his opponents as potential research subjects. His loyalty to Logos is unsure and a mystery.
- Vier (フィーア)
- Voiced by: Sayaka Ohara
The only female aide to Aria and the one she trusts the most. Out of all her subordinates Vier was the only one chosen by Aria herself. A tactician. She is Fiona-sensei.
- Mitsuru Kotokura (言蔵美鶴)
- Voiced by: Chihiro Aokawa
- A girl that works at the shrine. Very polite and can appear emotionless and doll-like. She is a very good cook and is good at housework. She has the power to create invisible barriers. Tamaki, when caught in her barrier at one point, comments that it feels like mizu-ame (a kind of syrup). She seems to have feelings for Shinji.
- A fox spirit the main character receives. It can be named by the player. Travels in the main character's shadow and comes out at her calling. Likes curling up and sleeping in warm places.
- Fiona-sensei (フィオナ先生)
- Voiced by: Sayaka Ohara
- The english teacher at the main character's school. Has long blonde hair and looks like she's from Hollywood. Of German origin.Her true form is Vier.
- Kiyono Takara (多家良清乃)
- Voiced by: Suzuko Mimori
- Masataka Ashiya (芦屋正隆)
- Voiced by: Yoshikazu Nagano
- A mysterious man the main character meets early on at the shrine and Kiyono's uncle. He says he is a businessman. Is interested in reading palms and faces. Loves rice crackers.
- Shizuki Ugaya
- Voiced by: Tamie Kubota
- Snapshot Pictures from anime : Hiiro no Kakera