Yin

Yin (インYín): Yin is was one of the main Cures of Bones Pretty Cure! and originally of "Darker Than Black". She is an emotionless spirit medium known as a "Doll"; she had 17 years old. Yin is of Finnish origin and her real name is Kirsi, which is the Finnish diminutive form of either Kirsikka (meaning "cherry"). Her alter-ego is Cure Aetos (キュア エートス Kyua Ētosu), she gains an eagle tail and wings; her silver hair became a long ponytail and her purple eyes became golden and controlling wind. Her exoskeleton is a Haast’s Eagle, and her color is silver.

Appearance:
.

Personality:
.

Early life:
.

Bones Pretty Cure! OVA: Episode Absolute Zero:
The story takes place after Gonzo Omega Pretty Cure! The Movie: The Blue Fire Lynx, Hiyori’s Great Adventures! When Hiyori and her friends, Yato and Yukine are at Jūsei Town, Hiyori felt another threat to the world, then they perceive there a young woman named Yin was attacked by a pack of wolves including Kiba, Tsume, Hige, Toboe and Blue. Because she had a device named the DNA Stone, at the time that Tsume attack her, Yin was saved by Hiyori who become Cure Lynx. Later at her new home, Hiyori watch the DNA Stone, there was an eagle drawn on it, Yin explains that this represents Haast's Eagle, an extinct species. By analyzing this stone, they discovered that Yin turned into Precure.

Bones Pretty Cure! OVA: Hiyori Returns:
.

Transformation Sequence:
Cure Aetos (キュア エートス Kyua Ētosu): is the alter Pretty Cure ego of Yin. Before to transform, she using her DNA Stone, her DNA Stone, she says "Pretty Cure, DNA Fusion!". Once the DNA Stone is shine a Eagle-like spirit popped out of the DNA Stone and merged with her. And the transformation begins; she is seen floating with her body, except for head, glowing with silver light. Her purple bib with a lynx motif, a blue skirt then appears and her PreCloth became a Cosmos Piece attaches itself to her tail. Finally are her purple claws-like gauntlets, blue boots, and claws-like shoulder pads. She gains lynx ears and a purple cat like-tail. She had horns-like blue flames on the head and her fangs earrings start to appear. She then does a short fly before landing on the ground and introducing herself as Cure Aetos, posing afterward with a eagle for background.

Attacks:
.

Etymology:
Yin: (銀) (イン In), in Chinese Pinyin language, Yín meaning "Silver".

Kirsi: Her true name which is the Finnish diminutive form of either Kirsikka (meaning "Cherry").

Cure Aetos: Aetos meaning "Eagle" in Greek language.

Songs:
Yon's voice actor, Fukuen Misato, has participated in several image songs for the character she voices. Many of them include duets with Hayami Saori, who voices Shirayuki, Uchida Maaya, who voices Iki Hiyori, and Omigawa who voices Maka Albarn.

Singles:
Silver Eagle.

Emotionless Doll.

Duets:
Animal Nature (Along with Hayami Saori, Uchida Maaya, and Omigawa Chiaki).

Fang and Feather (Along with hayami Saori).

Flying Song (Along with Orikasa Fumika).

Trivia:
・

・