Kororo

Kororo(コロロ, Corey in the English anime) is a Kuroppokkuru and the guardian ghost of Usui Horokeu, nicknamed Horohoro.

About
Kororo is a Koropokkuru (known as Minutians in the English anime) a tiny spirit people and the spirit ally of Horohoro. She is a nature spirit and can therefore, unlike human ghosts take a solid form without being placed inside a medium. She can also control cold on her own. She is later revealed to be a human girl named Damuko who Horohoro fell in love with, who reciprocated his feelings, but Horohoro's father made him avoid and ignore her, unintentionally leading to her death.

People who meet her are often smitten by her cuteness. Her people the Koropokkuru are in danger of being wiped out because there are almost no more fuki fields left for them to inhabit.

Past
Kororo was once a human girl, born Kurobe Tamiko, but nicknamed Damuko, whose family moved to Hokkaido because her father had a building project, constructing a dam that would destroy everything in the area around it, something that led her to be shunned. In her school she tried to befriend a boy named Usui Horokeu, even giving him the nickname of Horohoro, because the nickname "Usui-Kun" did not sound good and because "Horokeu" was hard to pronounce. At first Horohoro rejected her, but as she explained that she wanted to befriend him because they were alike(both of them were lonely) they became friends. However because of her father's dam, the Ainu Tribe Elder forbade Horohoro to see her, in turn leading him to not talking to Damuko.

Half a year later Damuko asked Horohoro why he ignored her, even wanting to hold their promise of seeing the Fuki fields in the spring. But following him into the mountains she had an accident and eventually froze to death. There the Koropokkuru tried to guide her soul to the afterlife but she refused, wanting to know the reason why Horohoro ignored her. There, Gororo appeared saying that the only way to stay on this plane was to become a nature spirit like them, and protect the lands and its people, which Damuko accepted.

Invading the Plants
While Horohoro fought with Kalim of the Ten Patch Officiants, Kalim called Horohoro by his real name and trying to make him reveal his true self. Horohoro would in his anger reveal the events that happened between him and Damuko something that made Kororo take her true form as Kurobe Tamiko and reveal to Horohoro how she became a Koropokkuru. She also explained that Gororo told her that once becoming a Koropokkuru she would stay in that form until her master's "Ice Thawed" where she return to her true form once. As she turned back to her original form, Horohoro hugged and apologized to her.

O.S. Kororo-Snowboard
O.S. "Kororo-Snowboard" (O.S.スノーボードにコロロ)

Description: Horohoro's original Over Soul, using a snowboard to integrate his Koropokkuru spirit, Kororo with. As an O.S., the tribal patterns envelop the board while Kororo's "face" appears on the base of the board. The Over Soul uses a frigid form of magic which freezes moisture in the atmosphere into hardened ice. Overtime, Horohoro begins attaching the board to his arm and forms a humongous ice-statue knuckle-hammer O.S.. Cold air can also be released from the board to dodge attacks midair.
 * Shaman: Usui Horokeu
 * O.S. Type: Weapon Type
 * Spirit Ally: Kororo (Koropokkuru spirit)
 * Medium used: Snowboard

Attacks


 * Kau Kau Furi Wenfe(Renegade Hail):This is an attack using the basis of his freezing powers. He creates big hail stones and launches them at an opponent impaling them or doing blunt force damage


 * Ebishingu Tesshipe(Icicle Sword): Another attack using his freezing powers. this creates a massive icicle on his board and he uses it like a sword and inflicting damage.


 * Mososo Kruppe(Frost That Rouse The Sleeping): he freezes the ground and creates ice spikes hoping to impale his opponent. since it is a ground based attack it is easily dodged.


 * Epittarki Upas-Horkkek(All-Consuming Avalanche): One of Horohoro's best attacks. He freezes every bit of water vapor in the air makes it become snowflakes and amasses into a big avalanche that crushes everything in it's path. Horohoro can also surf the avalanche with his snowboard adding more damage.


 * Nipopo Punch:: This is one of Horohoro's more basic attacks. Using the large ice statue on his arm he can freeze almost anything he hit and shatter it on impact.

O.S. Kororo-Ikupasuy
O.S. "Kororo-Ikupasuy" (O.S.イクパスイにコロロ)

Description: Hororo's second Over Soul manifestation, integrating Kororo the Koropokkuru spirit with an Ikupasuy--an Ainu prayer stick; a tool of communication to the gods. The Kororo-Ikupasuy O.S. embodies Horohoro's outrage at mankind's disrespect of nature, impeded by the owl-faced appearance of the Over Soul. The O.S. is capable of frigid magic and can manipulate extreme degrees of cold.
 * Shaman: Usui Horokeu
 * O.S. Type: Spirit Type
 * Spirit Ally: Kororo (Koropokkuru nature spirit)
 * Medium used: Ikupasuy

Attacks


 * Niike Fuike Kiroro (Scimitar of Snow): This attack is near the pinnacle of Horohoro's power. He creates a blade of pure spiritual power and slashes. This attack freezes everything the blade touches and the ice then explodes doing major damage.

O.S. Nipopo Gauntlets
O.S. “Nipopo Tekunpe”(O.S.ニポポテクンペ 「ニポポ手甲」)

Description: The Nipopo Tekunpe is a pair of enormous ice gauntlets joined by armor on Horohoro's back. It is Horohoro's strongest O.S.. Both gauntlets are named:
 * Shaman: Usui Horokeu
 * O.S. Type: Armor Type
 * Spirit Ally: Kororo (Koropokkuru nature spirit)
 * Medium used: Ikupasuy


 * “Hara Kihoku(ハラキホク [レフトハズバンド] Left Husband) (on the left arm)
 * "Shimon Mataki(シモンマタク [ライトワイフ Right Wife) (on the right arm).

They reflect the awakening of Horohoro's true survival instincts as he finally learned to overcome his grief and calms his restless soul. Because of this, he is now able to work in harmony with Kororo and merge his will with hers to control the extreme colds. Their combined power produces cold so powerful that it ravages the target from the inside out.

Attacks


 * Shimonmataki: Rupushikateku(シモンマタク [ライトワイフ; Right Wife: Freezing Hands): This is a defensive technique in which Horohoro freezes and shatters anything he touches with the right gauntlet.


 * Shushu Waki: Kamuiranke Opukeni(シモンマタク [ライトワイフ; Howling Wind: The fist that god offered): An offensive version of the previous technique in which Horohoro punches the target and flash freezes them at the same time which causes them to shatter making this his most powerful attack.


 * Harakihoku: Wose(ハラキホク [レフトハズバンド; Left Husband: Little Regret): Horohoro punches the air with his left gauntlet freezing solid and then shattering anything that is in the linear path of the hand even if out of arms reach.

Giant O.S. Kororo: Biran Birantte Kamui
Giant O.S Kororo: Biran Birantte Kamui Description: In the anime, Horohoro expands on his Over Soul after experiencing the world within the Ultra Senji Ryakketsu, and the result is a Giant O.S. called "Biran Birantte Kamui" which takes the form of an ice giantess. Its head gear greatly resembled the owl face of his second oversoul and during the last few episodes of the anime series it seems to gain a pair of twin cannons on its shoulders. In this form Kororo gains the ability to create icicles in many ways such as for protection or as projectiles.
 * Shaman: Usui Horokeu
 * O.S. Type: Giant Type
 * Spirit Ally: Kororo (Koropokkuru nature spirit)
 * Medium used: Ikupasuy

Attacks


 * Kau Kau Furi Wenfe(Renegade Hail): This is an attack where the ice giantess shoots icicle projectiles at her opponent.
 * Emus Noki-Pekonr: This is a defensive technique where the ice giantess creates an ice shield to protect herself.
 * Mososo Kruppe(Frost That Rouse The Sleeping): An attack where Horohoro have the ice giantess let ice spikes come out of the ground to impale her opponent.

Trivia

 * Most of the attack names are partially in Ainu language.
 * Koropokkuru (Kororo's species) means "little people under butterbur leaves" in Ainu language.
 * Kurobe Tamiko (Kororo's former human self) bares an uncanny resemblance to Makoto Sayama from Hiroyuki Takei's and Stan Lee's collaborated manga, Karakuri Dôji Ultimo.