Konata Izumi Familiy

Sōjirō Izumi (泉 そうじろう Izumi Sōjirō^?)

Voiced by: Hirokazu Hiramatsu , Tony Oliver (English)

Sōjirō is Konata Izumi's father, an author who works at home.^[7] He always wears loose, traditional Japanese clothing as his work clothes. He loves watching anime and playing video games,^[6] which influenced his daughter's interests. Sōjirō is "also a lolicon". This appreciation for neoteny may be one factor that caused him to fall in love with Kanata, whom he eventually married. He describes that he likes girls as some men do, but that he also appreciates younger ones. This means that this attraction is equal or possibly secondary, meaning he does not have a preference for them, so despite being a 'lolicon' (person with a lolita complex) he would not be a pedophile. Throughout the show news reports and conversations indicate that young girls in the area are being approached by a strange man, and a running joke in the show involves hints that Sōjirō is in fact the one doing it. The best example of this is the opening, part of which involves Sōjirō spying on two schoolgirls from behind a lamppost.

Sōjirō is very thin, and has unshaven facial hair, he has a mole under his left eye which his daughter inherited and has thick eyebrows. Additionally, he is allergic to pollen and when he decided to wear goggles and masks as protection from it, Konata sighed that, "Now you look weirder as well".^[16] She also frequently reminds him, "Please don't do anything as to be taken away by the cops".^[16] Also, he often forgets to lock the door when he is using the toilet, which leaves Yutaka in tremendous shock.^[10]

Sōjirō holds a deep love for his wife, Kanata Izumi, who died many years before. When Konata asks why Kanata chose to be with Sōjirō (largely as a joke at his erotic personality's expense), Sōjirō points out that he and his wife simply looked past outwards appearances: Kanata loved Sōjirō despite his otaku tendencies, and Sōjirō obviously did not mind that Kanata had an unusual physique and did not share his hobbies. He also says that one of the few things in life he was and still is absolutely confident in is that no one in the world loved Kanata more than he did.

Kanata Izumi (泉 かなた Izumi Kanata^?)

Voiced by: Sumi Shimamoto , Rebecca Forstadt (English, credited as Rebecca Olkowski)

Kanata was Konata Izumi's mother, who was also very short and bore a striking resemblance to Konata (minus Konata's ahoge, the catlike smile and the beauty mark under her left eye).^[7] She is described by Konata and Sōjirō Izumi as having a personality straight out of a bishōjo game. She died when Konata was an infant of unspecified causes and her only appearances in the manga are through a single photograph and through Sōjirō's memory. Since she was Sōjirō's childhood friend, Konata has wondered if that was one of the main reasons why her mother married Sōjirō. In the animated version and in the omake for volume six of the manga, Kanata returns to the Izumi residence as a spirit, and walks in on a conversation both Konata and Sōjirō were having about her. She is touched by Sōjirō's kind words that he was the only one who truly loved her as much as he did (she later realized that she too, loved him deeply), and even took a picture with him and Konata together. However, when Sōjirō and Konata look at the photo image in the camera, they are spooked at what appears to be a shadow standing behind them. Konata wants to delete the image, while Sōjirō wants to burn it, thinking that the family will end up cursed if they let it be, but Kanata pleads with them not to delete the picture to no avail, as no one can see or hear her

Yui Narumi (成実 ゆい Narumi Yui^?)
Voiced by: Chiwa Saito , Saori Nishihara , Julie Ann Taylor (English)
Yui is Konata Izumi's cousin and Yutaka Kobayakawa's older sister. She is a very easy going female police officer for the Saitama Prefectural Police Department who acts before thinking. She is a bit of a klutz and is a meganekko. However, she has a tendency to exhibit road rage when she is behind the wheel (but, incidentally, shows incredible skill, as a street racer, much in the same vein of Initial D's Takumi Fujiwara).^[9] Yui has a well-rounded face, a large forehead, a catlike smile similar to Konata's and straight, short hair. She isn't into fashion that much, and after getting married, Yui left behind her maiden name, Kobayakawa. However, her husband is out of town most of the time during the series, so she frequently visits Konata's house, mainly as a distraction, seeking to play her video games and read her manga. Usually, Yui will come over to Konata's home very late at night while drunk. A running gag in the series is that Nanako Kuroi is oblivious to the fact that Yui is married. She drives a blue Subaru Vivio in the anime.

Kiyotaka Narumi (成実 きよたか Narumi Kiyotaka^?)
Voiced by: Nobuyuki Kobushi
Kiyotaka is Yui Narumi's husband and Konata Izumi's cousin, by family. He is currently away and his only appearances throughout the series was through a phone conversation with his wife. His name, the fact that he is away working, and the fact that Yui is a cop could be a Spiral: Suiri no Kizuna homage since in Spiral, the main's character's older brother shares the same name and left his wife for work