Misaki Ayuzawa is a unique phenomenon within Seika High School. In a predominantly male institution, she became the first-ever female student council president through her honesty and diligence. Ever since Misaki got promoted to the position, she has been working tirelessly to ensure a better school life for all girls. Despite that, Misaki is very strict with the boys, which has earned her the title Demon President. One day, after hearing a girl cry in the hallway, Misaki encounters Takumi Usui—the most popular boy in the school—as he rejects a love confession. Enraged at what she is seeing, Misaki reprimands him for making the girl cry. However, Usui is indifferent and brushes it off as nothing. Unexpectedly, Misaki soon runs into Usui again, but this time when she is working at a maid cafe! Embarrassed that someone has found out about her secret occupation, Misaki promises herself not to let Usui destroy her reputation. However, the mysterious boy now begins to visit the same cafe regularly to observe and tease Misaki. When push comes to shove, will Usui still be able to keep the president's secret?

Haruhi Fujioka is a studious girl who has recently enrolled at the prestigious Ouran Academy. One day, while looking for a quiet and peaceful place to study, she stumbles across a seemingly unused music room. Upon entering, Haruhi is welcomed by the members of the well-known Host Club: a club in which attractive boys amuse girls from across the entire school. However, when Tamaki Suou—the founder and president of the club—startles the bright scholarship student, she accidentally breaks an expensive vase. With repayment looking difficult for Haruhi, the Host Club members come up with the perfect solution to the girl's problem: work for the club and ultimately become a Host herself! Mistaken for a boy by her peers, Haruhi has to entertain various female students while coping with her fellow Hosts' extravagant personalities.

Shizuku Mizutani is apathetic toward her classmates, only caring about her grades. However, her cold view of life begins to change when she meets Haru Yoshida, a violent troublemaker who stopped attending class after getting into a fight early in the school year. He is not much different from her, though—he too understands little about human nature and does not have any friends. Much to Shizuku's surprise, he proclaims that she will be his friend and immediately confesses his feelings toward her upon meeting her. Because of her lack of friends and social interaction, Shizuku has a hard time understanding her relationship with Haru. But slowly, their friendship begins to progress, and she discovers that there is more to Haru than violence. She begins to develop feelings for him, but is unsure what kind of emotions she is experiencing. Together, Shizuku and Haru explore the true nature of their relationship and emotions.

While most young girls make an effort to show off their feminine charms, Futaba Yoshioka deliberately behaves like she wants to repel anyone who might be attracted to her. Ostracized by her female classmates in middle school for being a little too popular with the boys, she desperately strives to avoid a similar situation in high school by being unnecessarily noisy and graceless. Nevertheless, scattered among Futaba's unpleasant memories are the treasured moments with the boy she had a crush on, Kou Tanaka. Unfortunately, that spell abruptly ended on a sour note when he suddenly stopped attending school and never came back. When Futaba finds out that Kou has returned—with a different last name this time—she can already feel the butterflies in her stomach. However, Kou Mabuchi is not the warm boy that she remembers from her days in middle school; he is now taller, more charismatic and withdrawn—making him far less approachable. Futaba believes that if she returns to her former self, Kou will begin to take notice of her again. But is she prepared to sacrifice her bubble of normalcy and risk losing her friends in the process?