The protagonist, Narumi Takayuki met Haruka by Mitsuki setting them up with a date during High School. Later, after Haruka gets in the accident, he felt responsible for it and falls into a deep depression. Later in the story, he works at a family restaurant after having regressed in his studies due to the accident. In Haruka's absence, he gradually begins to develop a relationship with Mitsuki. (Source: Wikipedia)
An older male teacher at Futatsubashi Elementary School. The only one of the four main teachers seen in the series with children, specifically a daughter, Oyajima has an easygoing outlook on life and teaching and frequently dispenses advice and words of wisdom to his younger, more easily excitable work colleagues. Rarely flustered, he is the senior of Sae Shirai and has a visible soft spot for her, often offering insight to H�in concerning their mutual colleague's behavior, background, and mindset in his usual, laidback style without coming off as defensive or biased. His good working relationship with Shirai also allows him to present her with alternative points of view or make thought-provoking observational comments in a gentle, nonconfrontational manner without either one of them getting worked up in the process.
Age: 15-17 Birthday: June 7 Zodiac sign: Gemini Height: 160 cm Blood type: B Likes: Raku Ichijou, ramen, her ribbon Dislikes: Claude's over-protectiveness, being called a gorilla by Raku, Dorayaki Abilities: Immense Strength, Great Agility Weakness: awful cooking, lightning, darkness The female lead of Nisekoi. She is the daughter of the lead of the Bee Hive Gangsters and is in a fake relationship with Ichijo Raku. Chitoge is very smart and completely fluent in both English and Japanese despite growing up in America. She is half-Japanese. She is somewhat forgetful, aggressive and quick to attack someone who gets on her nerves. Once you get to know her though, she becomes very talkative and friendly. She is very bad at cooking because she never measures ingredients and adds random things she thinks will make the dish taste better. She is very athletic as she can easily jump over the school's walls and swim 25 meters in a couple of seconds. Ever since she was a child she has had a hard time making friends as others were afraid of her gangster family and as a result she had a cold demeanor toward people at the start of the series due to Claude's over protectiveness. This led her to create notebooks filled with information on classmates in an attempt to make friends. The red ribbon in her hair is a first gift from her mother. She really loves it and always wears it instead of another ribbon; however, her relationship between her mother is getting cold because her mother is really busy woman who leads a ton of companies. Raku knows it well and tries to break the ice during the Christmas eve. Finally her mother notices that Chitoge doesn't hate her even though she never pays attention to her. In the manga, she gradually starts to fall in love with Raku because of his kindness although she does not show it. She has a gentle spot for Raku (sometimes). Later in the manga, her father is looking at an old photo album from 10 years ago. It has been revealed that Chitoge had brown eyes when she was younger and turned blue as she grew up. (Source: Nisekoi Wikia)
Son of a Yakuza family. He's intelligent but not an adept fighter. He likes sweet things, wants to marry a Yamato Nadeshiko and says he's the kind of person who has to do it absolutely correctly when he puts his mind into something otherwise he can't be satisfied. Raku once got amnesia. He tried to save Chitoge from a wild ball that unintentionally aimed for her head. Unfortunately, it hit his head mercilessly. He was unconscious and then woke up a second later. He did not recognize anyone, even though all of his friend were beside him. He became a really sincere person. He charmed everyone who talked to him—even Chitoge, Tsugumi, Tachibana, and of course Onodera. During his amnesia period, he stayed at Chitoge's mansion. After some quarrel with Chitoge, it seemed like he hinted about the one who holds a key. It was also unclear though because he immediately regained his memory. The hint regarding the girl who holds the key to his locket is "the girl's eyes were either brown or black but not blue." In the end, Raku realises that he has feelings for Chitoge, rather than Onodera. While Onodera confesses to him, and turns out to be the girl of the promise, he rejects her confession. He tells Chitoge that he loves her, and she confirms that their feelings are both mutual.
Candidate pilot. Karin is a quiet girl who seems to be distracted from reality and likes to text-message her cell phone. She is afraid of cats in general and is 15 years old. (Source: Wikipedia)
Lunar is a childhood friend and rival of Sun. She has used the powers of her mermaid voice to become a pop star idol singer. She seems to suffer from a superiority complex, and she never passes up an attempt to overshadow Sun. She initially thought that Sun was boasting Nagasumi to her, and in an attempt to outdo Sun she decides to steal him away from her by making Nagasumi her servant, since Nagasumi has also seen her mermaid form. Later she decides to live in Nagasumi's house until his servant status is over. (Source: Wikipedia)
Kai is the richest boy in Japan, the fourteen-year-old son of the head of the multi-million dollar Mikawa Corporation. He rivals Nagasumi for Sun's hand in marriage. He is a killer whale from another mermaid group. Strangely while Sun and Lunar are shown in Mermaid form (torso of a human and tail of a fish) whenever they fail to maintain their human forms, Mikawa is shown as an entire Killer Whale when he succumbs to the effect of water. He also has agoraphobia, which is why he travels only in submarines and wears an astronaut's suit in open spaces. While looking for a servant he befriends Saru. His name is related to Mikawa Bay and Neptune (海王星, kai�sei?). (wikipedia)