is a light novel series by Akira (日日日), with illustrations by x6suke. A 26-episode anime adaptation was broadcast in 2008.

Plot summary A thousand years ago, Enka (閻禍), the god of destruction, died saying that its "child" would destroy the world. In order to prevent this, the Great Japanese Empire Paranormal Phenomena Bureau of Measures begins (code name: "code-Olympus"). The family is composed of Ōka Midarezaki, an official of the Bureau, and Kyōka Midarezaki, a self-proclaimed goddess, as parents; the children, human and otherwise, are the candidates – all potentially the prophesied "Child of Enka". The goal of the operation is to discern which child the prophecy applies to, as well as to teach him or her about the love of family in hopes of convincing him or her to not destroy the world. The story focuses on the mishaps and adventures that the ad hoc family experiences together.

Characters Midarezaki family

The Midarezaki family "mother". She is 20 years old, however, she has an appearance of a young girl with cat ears and a tail. Her real name is '', and she used to be worshiped by the people of an underground kingdom named 'Shangri-la', however, she ran away because she felt something was missing from her life. She is from a race of demons that uses other people's bodies as theirs, and that she used to be their queen before deciding to abandon her people and live as a human with gorgeous black hair, deep green eyes, and as tall as Ōka. However, because her secret cannot be discovered, her memories as a demon were erased. Her name as the demon queen was 'Vanessa'. Due to her past of being worshiped, she has a very arrogant and destructive nature, but despite her personality, she actually cares about her family and is trying to do her best as Ōka's wife and loves him dearly, getting very jealous when she found out Ōka went out with another woman and tries to have a husband and wife relationship (sadly she gets all her ideas from manga and soap operas, leading to embarrassing situations for Ōka). At the end she is last seen heading back to Shangri-la to find out who she was, leaving many of her mini-dolls with her family for company. She has an ability named ', which allows her to manipulate a person's mind or to control a set of mini-dolls that help her when necessary (in the fifth episode of the anime, she also uses this ability to communicate telepathically with Yūka). She is also a very bad cook (where in episode 15 after making an anniversary cake there was bullet holes, voodoo dolls and knives into the wall), where her meals frighten everyone in the family (giving an ominous glow to the food or bringing it to life) and has a strange habit of naming certain people around her with weird names, stating that they should be proud of a name given to them by a god. Ironically, even though she is the mother of the family, she is also the shortest member as well (except when Gekka is in her jellyfish form).

The main protagonist and the father, who is forced to participate in Cozy Family Operation. Though sensible and collected, he is often teased and mocked by Kyōka. He lost his parents at the age of three, and has no memory before then. He is also the head of the operations department of . He clearly stated to Kyōka that he is unable to love someone, yet he does treasure the family and likes her (which made her blush). But later in the series, Ōka develops feelings for Kyōka, and realizes what love is really like.

The eldest son, aged 23, he enjoys dressing as a female and often speaks in a feminine manner. He also works at local okama bar "Virgo" under the name of . He was originally a member of a yakuza clan named Kizakura, but ran away when a girl he loved was killed by his family. His original name is . He once met Chika in person a long time ago, and made a promise with her which eventually leads her to join the Midarezaki family. After all the "training" Chika has put him through, he has seemed to have developed a liking for pain. He is last seen on a date with Chika, but it is unknown if she finally made him "manly" again.

The nine-year-old eldest daughter (the second daughter after the end of the first book); comes from Himemiya, she was continuously abused by her family according to their tradition called "Solitary Doll", especially by her biological sister. The point of Solitary Doll is to beat and abuse the weakest (usually the youngest) member of the family to relieve stress. Despite her past, she has a very calm and gentle personality. Originally named , she now lives her life as an elementary school girl and is friends with a fellow student. This friend, Yamamoto, tries to bribe her with pudding (hinting that it might be her favorite food) to help him with his test. She also has a strong attachment to her father Ōka as she likes it when he compliments her on how cute she looks, with sometimes the first question she asks being, "Do you think Father will think I'm cute in it?". Related to this dependency, she is the one most anxious about Ōka leaving the family – from joining in odd family schemes to drinking all the water in the house to dehydrate an alien who showed romantic interest in Ōka. At the end of the anime she is seen taking her friend Yamaguchi to her house.

The seven-year-old second son of the family, he is a lion, and known as the last link with the "Brown Emperor", able to talk to any animal and even give them orders. He talks in an archaic manner, and he is very proud of himself as a lion. He is also very fond of Yūka who is commonly found riding or cuddling herself on top of him. He usually refers to his siblings as Honorable Sister or Honorable Brother. Since he is described as coming from the savannah on the edge of the Empire, the Greater Japanese Empire in the series appears to dominate most of the planet's Eastern hemisphere. His old friend Madara has a crush on him, but he remained unaware of this for some time because he was too dense to realize that "he" was a "she".

Three-year-old youngest son is a biological weapon made from the flesh of Enka that bears the name of . Three years before, he destroyed the laboratory where he was made and ran away, and now suppresses his past memories. According to his creator, he was once also referred to as "Robes". In a speech to Yūka, he tells her that every member of the Midarezaki family is between "heaven and hell", unable to tread in either. He enjoys watching television and seems to be the only one that can eat Kyōka's cooking (probably due to the fact he doesn't have a stomach or taste buds). His brother is dubbed as Dekamelon by Kyōka, almost a green version of Hyōka with a running gag that something happens right before he can say his real name. Hyōka has feelings for Takanashi Kiriko, which are later revealed to be mutual but she doesn't want their relationship to start till after she has "found" herself. It is also revealed that he was friends with Takanashi Yuiko, and accidentally killed her, unaware that she was in one of his shooting targets (deliberately placed there by Dr. Gebok to test his reaction to her death). It is very likely that this incident caused him to destroy the laboratory and is the memory he had suppressed until hearing of her through Kiriko.

The 'youngest daughter' of the Midarezaki family. She is a jellyfish, however, she is able to do things that are unusual for a normal jellyfish such as writing letters, changing her body's color according to her feelings or shooting lightning as an attack. The sub-director of Supernatural Phenomenon Treatment Bureau's operation department went fishing, caught her and DNA-tested her for fun, and it turned out that a mere jellyfish actually has Enka's DNA, so she became a member of 'Cozy Family Operation'. Her real name is and her exact age is unknown (although she mentions having lived for over 1,000 years in the third episode of the anime). She has various other forms which she takes from time to time, such as the giant Kraken who is summoned by speaking her name. Occasionally a dark-haired female with crescent-shaped insignia, dressed in a manner of Heian period, appears in the book, and it is believed by some family members that she is Gekka. This form of her was introduced in the sixth episode of the anime, where she scolds her family for leaving her behind before sending them all home from a deserted island. The family have no recollection of this occurring due to Gekka have wiped their memory. It is later discovered that she is actually the god of the planet Ocean, which, as its name suggests, is an entire planet covered in water. She created a water-like species from her own body because she was the only living being on that planet. She left the planet when Gouyokuou came to her planet wishing for her hand in marriage. At first she turned him down but after he came again she told him she would give him an answer in a thousand years. In the end after stopping Water from destroying her family, she explains that when Gouyokuou first came to her she was scared as he was the first species she met that wasn't made from her and told him she would answer him in 1000 years as a way to run away. However, before she sends Gouyokuou off into space, she agrees that she will marry him.

The 'eldest daughter' of the Midarezaki family. Formerly known as , she is Yūka's biological sister and is the last to join the Midarezaki family. She was the former Solitary Doll before Yūka was born. After Yūka became the next Solitary Doll, she tortured her in various ways and even bribed her classmates to bully her. However, she remembered the promise with Ginichi Kizakura, now Ginka Midarezaki, and regrets her wrongdoings. She actually doesn't have Enka's DNA, but she becomes a member of 'Cozy Family Operation' by Kyōka's ability. Now she is constantly found by Ginka's side, whom she has had a crush on since childhood. She is frequently trying to make him manly again via failed attempts to seduce him, and trying to make him act more manly, whether he wants to or not. She calls Kyōka Neko-san. At the moment she lives like a normal high school girl and is the head student (not of her own free will as she beat up, in self-defense, the current head), but even though she tries to avoid her "responsibilities" she cares very dearly for her friends and orchestrates a raid on a yakuza compound to save her friend. She is well endowed and the female cast seem to be jealous (especially Kyōka as she has the body of a child and can't get Ōka's attention). In the end she is last seen on a date with Ginka, but it is unknown if she finally made him manly again.

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