♂ m

Twin brother of Chitose. 3rd year high school student. Has a laid back personality opposed to his sister, and is even a little cold. Despite this, like his sister, he possesses a childlike curiosity. He often has to scold his sister. He is frustrated being a younger brother.

♀ f

Twin sister of Chihaya. 3rd year high school student. In contrast to her brother, she is a very bright girl who is full of energy. She has a very daring personality, causing her to be scolded by Chihaya. Gets along well with everyone. Very curious, and acts before thinking. She has not fallen in lov... read more

Twin sister of Chihaya. 3rd year high school student. In contrast to her brother, she is a very bright girl who is full of energy. She has a very daring personality, causing her to be scolded by Chihaya. Gets along well with everyone. Very curious, and acts before thinking. She has not fallen in love yet, but dreams of it.

♂ m 17

Student council vice president. Has been with Tarou since Middle School, and was vice president then, too. He is usually gentle, but will hit Tarou when he gets out of hand. He does the student council work well and, because of his caring personality, has a wide circle of friends. He doesn’t like be... read more

Student council vice president. Has been with Tarou since Middle School, and was vice president then, too. He is usually gentle, but will hit Tarou when he gets out of hand. He does the student council work well and, because of his caring personality, has a wide circle of friends. He doesn’t like being disturbed but he also hates seeing others being left out. He uses honorifics for people he is on unfriendly terms with.

♀ f

Classmate of the twins. 3rd year high school student. Despite her large bust she has a modest personality. An idol like person who is kind to everyone. Has been friends with Yoshino since Junior High School. She is said to be the “heart of Seishun-bu” organizer in the shadows. She is scary when ange... read more

Classmate of the twins. 3rd year high school student. Despite her large bust she has a modest personality. An idol like person who is kind to everyone. Has been friends with Yoshino since Junior High School. She is said to be the “heart of Seishun-bu” organizer in the shadows. She is scary when angered. She isn’t good at talking to boys, and her face becomes red.

♂ m 17

A transfer student and classmate of the twins. He was a child actor, But suddenly declared he was going on hiatus. His reason for leaving is shrouded in mystery. After pausing his activities, he became an ordinary student to get away from the city.He is staying at the twin’s grandmother’s house. He ... read more

A transfer student and classmate of the twins. He was a child actor, But suddenly declared he was going on hiatus. His reason for leaving is shrouded in mystery. After pausing his activities, he became an ordinary student to get away from the city.He is staying at the twin’s grandmother’s house. He is elusive He borrows manga from Yoshihiko.

♀ f

One of the twins childhood friends. 3rd year high school student. She is a coarse, but pure-hearted girl. She and Ouji argue often, but secretly trust each other. She doesn’t see any members of Seishun-bu as love interests because they are too familiar.

♂ m 16

One of the twins childhood friends. The only second year member of Seishun-bu. He is extremely shy, and has trouble being honest with his feelings. He is very against Seishun-bu’s activities, and doesn’t refrain from saying negative things about them. However, with people he likes, he tries to stay ... read more

One of the twins childhood friends. The only second year member of Seishun-bu. He is extremely shy, and has trouble being honest with his feelings. He is very against Seishun-bu’s activities, and doesn’t refrain from saying negative things about them. However, with people he likes, he tries to stay close even if his words are harsh. He is so terribly nearsighted he can’t walk without glasses or contacts.

♂ m 17

One of the twins childhood friends. Member of Seishun-bu. His behavior is rough and blunt. The other members have noticed his foul mouth He is the most feared student in school, even among teachers. A middle school student who looks up to him acts as his henchman. Though he looks rough, he is actual... read more

One of the twins childhood friends. Member of Seishun-bu. His behavior is rough and blunt. The other members have noticed his foul mouth He is the most feared student in school, even among teachers. A middle school student who looks up to him acts as his henchman. Though he looks rough, he is actually a kind, caring man who can’t express his feelings.

♂ m 17

One of the twins childhood friends. He is the president and creator of Seishun-bu, and created it because he wanted to spend time happily with his friends. He is shorter than the other guys, but he doesn’t care much. He has a very trusting personality and takes everything at face value, he is also v... read more

One of the twins childhood friends. He is the president and creator of Seishun-bu, and created it because he wanted to spend time happily with his friends. He is shorter than the other guys, but he doesn’t care much. He has a very trusting personality and takes everything at face value, he is also very straightforward. Like a big brother anyone can rely on. He is weak to girls crying.

♀ f

Classmate of Tarou. 3rd year high school student. Probably because of her inhospitable atmosphere, she is always alone and is seen as mysterious. She never attempts to become friends with anyone, but is open with Kotori. Due to her tall height, and her honest nature, she is intimidating to some peop... read more

Classmate of Tarou. 3rd year high school student. Probably because of her inhospitable atmosphere, she is always alone and is seen as mysterious. She never attempts to become friends with anyone, but is open with Kotori. Due to her tall height, and her honest nature, she is intimidating to some people. Doesn’t like that she can’t win against Tarou at studying. Ouji wants her to join Seishun-bu, in order to meet certain conditions.

♂ m 17

Student council president. Contrary to his stupid behavior, he is better at studying than anyone else. He has a strong rivalry with Ouji, and he even interfered with the establishment of Seishun-bu. He often makes the vice president angry, but doesn’t get discouraged and continues to disrupt their w... read more

Student council president. Contrary to his stupid behavior, he is better at studying than anyone else. He has a strong rivalry with Ouji, and he even interfered with the establishment of Seishun-bu. He often makes the vice president angry, but doesn’t get discouraged and continues to disrupt their work. He prefers to keep what he does in student council private. Seems obsessed with his own name.

♂ m

Atsumi Rihito's older brother. He's betrothed to Nazuna.

♂ m

The protagonist's homeroom teacher and the advisor of the 'Seishun' club. Because he spends so much money on his looks he doesn't have money for lodging so he is living without rent at the protagonist's grandmothers house.

♀ f

The protagonist's grandmother.

♂ m

The protagonist's uncle.

♂ m

3rd year middle school student. He was rescued from being bullied by Saigou Heita and became attached to him. He sometimes sneaks into the high school after his classes are over to find Heita.

♀ f

She's betrothed to Atsumi Hiroto.

♂ m

Kuga Haiji's manager.

♂ m

3rd year high school student. The student council secretary.

♂ m

One of the twins childhood friends. Seishun-bu's mascot. He is the son of the Onsen Manjuu store owner. He says his stomach is full of buns, dreams, and love. He is always looking forward to the new manga releases.

♂ m

♂ m

He owns a sukiyaki shop the club members often go to.

♂ m

Nagumo Arisu's younger brother.

♂ m

Saigou Heita's father.

♀ f

Sannoudou Ouji's mother.

♂ m

Sannoudou Ouji's older brother.

♂ m

Sannoudou Ouji's younger brother.

♂ m

The patriarch of the Sannoudou family and successor of his grandfather's sushi shop.

♀ f

Shinonome Yoshino's mother.

♀ f

The class president.

♂ m

The class vice president.

♂ m

2nd year high school student. The student council treasurer.

♀ f

Yamada Tarou's younger sister.