Kaji Teppei (梶 鉄兵 )

Teppei is the 4-year-old little brother of Fumino. Teppei's personality is bright; he often makes people around him happy. Both Fumino and Kazuma love him. Teppei views Kazuma as a brother or a father figure. He often gives Teppei candy for his hard work or just simply for being cute.

Though still very young, he often tries to defend his sister when anyone bullies her. This is shown when Shōma was criticizing her; Teppei defends her by punching him in the leg and saying, "Shō-chan, you bullied Bun-chan" with his fists balled up in anger.

When Fumino and Teppei leave Kazuma, Teppei leaves a trail of his collected hard candy for Kazuma to follow. He was also the one who tried to convince Fumino to stay with Kazuma when she tried to leave, which causes enough distraction for Kazuma to catch up with them. He loves living with Kazuma.

He gave his first drawing to Kazuma as a birthday present. It was a picture of Kazuma himself.

Teppei goes to school with his kindergarden teacher Ryū, who is Kazuma's best friend and neighbor. Teppei nicknames Fumino "Bun-chan" and Kazuma "Mā-kun."

Kaji Fumino (梶 文乃 ) & Ojiro Kazuma (尾白一馬 )

Kaji Fumino

Fumino is a 16-year-old girl who is described as an delinquent in Kumaneko High School, although she is not. She simply interrupts bullies and other bad students in violent ways.

She has a strong personality and sometimes loses her temper. She cares deeply about her brother Teppei. Her parents died in a car accident and so she had to become responsible for her little brother. As a result, she has become more mature and practical than others her age. However, she is terrible at cooking, so she relies on Ojiro to cook for her and her brother.

Even so, she cooked some porridge with some spring onions for Kazuma when he had a high fever. While nursing him with a mask on, he told her that when he was ill, nobody went near him, so they wouldn't get sick too. He also kissed Fumino through the mask, though when he got well, he doesn't remember what he had done.

She once secretly worked in one of Retsu's construction buildings for two weeks (cleaning floors) in order to earn some money to buy Kazuma a birthday present. She bought him a green necktie.

According to chapter 17, Fumino did nothing but sleep in class for the 1st year of school, which causes other students to see her as a bad student. Now she does well in her studies, only slightly poor in English.

Kazuma calls her "Fumino-san". He's very protective of Fumino and doesn't like when other men get too close to her.

Fumino loves Kazuma very much.

Ojiro Kazuma

A 24-year-old English teacher who teaches at Kumaneko High School, Kazuma is described as a "plain, glasses-wearing English teacher." Kazuma is the only one who looks for Fumino when she runs away and ends up marrying her, supposedly only to help her and Teppei. He is sometimes goofy and says he appreciates seeing Fumino's rare smile.

He asks Fumino to help him with problematic students, although he is a teacher. He has a calm and caring demeanor and cares for young Teppei more than Fumino does (according to her). He often gives Teppei candy for his hard work or just for being cute. Kazuma cooks for the family and usually sleeps much later than the rest of his family because of his dedication to teaching. Kazuma has numerous costumes for both Teppei and Fumino to wear and often dresses them up for cosplay.

Even though they are married, Fumino and Kazuma sleep separately. He occasionally sleeps in Fumino's room, but only next to Teppei. Kazuma isn't open about his past, but later in the story, it is revealed that Kazuma was once in a gang. According to his old "gang" friends, he was called Jigoku no Mā-kun (地獄のまーくん , Mā-kun from Hell) because he beat up 100 motorcycle gang members without getting a single scratch.

He still has formidable fighting abilities; shown when he beat up two guys with one hand, while with his other hand he was holding Fumino. He sadly mentions once that his family is still alive, only that they reject him because of his delinquent past. His mother has passed away. His father is a politician as revealed by Shōma.

According to Shōma, Kazuma was an excellent student, as expected from a person set to become the successor of his father. However, suddenly one day, he turned into a delinquent and left home.

Kazuma also mentions that he would like to tease Fumino first before "touching" her and very much does so every chapter. He feels that their marriage is only for Teppei's sake and that he shouldn't be "touching" her in case she leaves him for another man; which he would respect if she did. Even so, he starts developing feelings for Fumino slowly.

He joked that if they were to sleep together, she would have at least grown her breasts to a size C.

Faster than a Kiss (キスよりも早く ,Kiss yori mo Hayaku)

Fumino and her 4-year-old brother Teppei have lived with relatives since their parents died in a car accident. Tired of moving from a relative's house to another, she decides to run away and work to support her brother on her own.

As they sit on a park bench, her English teacher, Kazuma Ojiro appears in front of her and her brother. He tries to convince her to go back to school. She jokingly asks him to marry her in order to support her and Teppei, and he agrees.

Usui Takumi (碓氷 拓海 , Takumi Usui)

One of the most popular boys at Seika High, Usui appears to take little interest in anything and prefers to observe things as they unfold, though proves to be extraordinarily talented in numerous areas. He develops an interest in Misaki and is the first to learn she is working at a maid café, but chooses to keep her secret. He tends to tell Misaki he likes her, but she dismisses his behavior simply as harassment. Still, he continues to watch over and protect her, as well as offering insightful advice on how to deal with the boys at Seika effectively. Even though he says he likes Misaki, he tells Kanou that he doesn't want to be in a serious relationship.

Misaki Ayuzawa (鮎沢 美咲 ,Ayuzawa Misaki)

The protagonist of the story, Misaki is the first female Student Council President at Seika High and known for her extremely demanding and aggressive attitude towards boys and relentlessly reforming them to what she considers are acceptable standards of behavior. Her negative attitude towards males is mostly attributed to her father amassing with a huge debt and then disappearing; Misaki became determined to make sure her weak mother would not have to work so hard to support both Misaki and her younger sister. To this extent, she secretly and reluctantly works as a maid at Café Latte. Regardless of her endeavors, Misaki is always driven to her best and has a strong sense of justice, but has a tendency to forget her own well being in the process when she is helping others. She starts to have feelings for Usui as the series progresses, although she doesn't realize them herself.

Kaichō wa Maid-sama!

Once an all boys school, Seika High, a renowned school full of reckless and filthy students, has recently become a co-ed school. However, with the female population still remaining a minority even after the change over the recent years, Misaki Ayuzawa takes it into her own hands to reform the school and allow a chance for the girls to feel safer in the rough environment.

Training, studying and even becoming the first female student council president of the school, Misaki has gained a reputation among the male students body as an uptight boy-hating dictator and as a shining hope for the teachers and fellow female students. However, despite her tough-as-nails appearance, she secretly works part-time at a maid cafe in order to support her family. Unfortunately, her secret is soon revealed when the somewhat impassive Usui Takumi, a popular boy at school, nonchalantly discovers her in a maid uniform after school.

Yuki Cross (黒主 優姫 ,Kurosu Yūki)

is the adoptive daughter of the headmaster of Cross Academy, and a Guardian, one of the members of the school's disciplinary committee. Ten years prior to the start of the series, Yuki was rescued from a vampire attack by another vampire, Kaname. She lost all memory of her life from before the attack, and was adopted by Headmaster Cross. After Zero's vampire nature is revealed, she begins giving him her blood to drink. However, Yuki loves Kaname, who has always been protecting her and has been by her side during her childhood as a vampire. When Rido Kuran, their uncle, resurfaces at Cross Academy, Yuki's memories are unlocked, revealing that she is actually a pureblood vampire, both Kaname's sister and his fiancee.