As a fifth-grader, Mikan distinguishes herself from her peers by joining forces with Rabi, an alien creature who bears a striking resemblance to a rabbit. Together, they serve as protectors of the planet, battling injustice as valiant heroes.
Since childhood, Yuuya Tenjou has been subjected to bullying, causing him emotional wounds. Despite living with his beloved grandfather and attending school, he continues to endure the relentless attacks of his tormentors. Eventually, Yuuya takes a long break from school to heal and recover. During his hiatus, Yuuya is occupied with tidying up his grandfather's home when he uncovers an unfamiliar room filled with various artifacts that his grandfather collected during his travels. As he arranges the items, Yuuya stumbles upon a hidden door that piques his curiosity. He unlocks the door, only to be stunned by what lies beyond.
Ichika, who has a crush on Asuka, decides to try a love charm. However, what appears before her is a self-proclaimed No.1 Cupid named Yashamaru Manjigahara, who dons a gang-style uniform! With this delinquent-like Cupid in charge, will her love actually work out...⁉︎
Class queen Manami Fuwa has been gaining weight lately, and to make matters worse, a rival girl is taunting her in class, calling her a "muscle ball with money." When Taichi Utsuki can't contain his thoughts about her weight, he's forced to accompany Fuwa on her diet! A romantic comedy of dieting with a violent, irrational, selfish girl with no sense of emotional distance begins.
"You'll never fall in love with me." Takamura, a high school student, returns to the town where he lived as a child and, by chance, finds himself in the same class as Rei, the boy he had a crush on back then. Rei also remembers Takamura, and feeling something akin to fate, Takamura once again begins to harbor a faint feelings for him. However, when Takamura witnesses Rei entering a hotel with a man after class, Takamura is surprised and asks him about it. Rei nonchalantly replies that the guy was a sex friend, and Rei's next words are: "I have no idea what it means to fall in love with someone"...?
When Nishiki, a pupil attending a rural middle school, meets Atsumori, a visitor from Tokyo and high school student, she engages in conversation with him. Her interactions with the suave Atsumori fuel her desire to flee her upbringing in the countryside and relocate to the city. But to her surprise, an opportunity to move to Tokyo arises through a proposal of marriage!
Inami, whose older brother doesn't go to school, and Kiyokawa, whose older sister doesn't go to school, both became the class pet caretakers when they were in fifth grade. Each carrying their own burdens, the two had supported each other through their daily lives. But then one day, an unexpected incident occurs…
During her first year in high school, Ena received a series of confessions from strange guys. Her friend Miu made a joke, suggesting that her inability to reciprocate love might be under a curse. Soon after, Ena found out that her mother was getting remarried and she would be gaining a little brother and sister. However, much to her surprise, her "little brother," Touma, was not so little after all, and he was also very good-looking! Since they were not biologically related, Touma warned Ena not to develop any romantic feelings for him. How would their relationship evolve now that they were living as a family?
Fuyuhiko Unoki has always been labeled as a weakling due to the constant bullying he endured from elementary to middle school. Unfortunately, high school didn't bring any change in his situation as he was greeted by the school's top delinquent, Kanade Toramaru, who claims ownership over him. From that day on, Fuyuhiko's high school life is anything but normal as he becomes Kanade's personal errand boy, living in constant fear. However, Kanade is under a big misinterpretation as she believes that Fuyuhiko is her boyfriend while he struggles to hide his dread of her. Despite the misunderstanding, Fuyuhiko and Kanade grow closer, blurring the lines between their imaginary romance and a possible real one.
Yukari Marii may appear innocent, but she holds a deep and concealed secret: her striking purple eyes see all living things as robots. Initially brushed off as a harmless quirk by her friend Manabu "Gaku" Hatou, he soon discovers that there is more truth to her perspective than he anticipated. Despite her peculiar worldview, Hatou feels an undeniable urge to protect Yukari due to her charming demeanor. On the other hand, Yukari perceives Hatou as an "adjustable, all-purpose robotic device." Nevertheless, Yukari's unique and isolated perspective has caused her to feel alone, with even her old friend Nanami Tenjou treating her cruelly. Following a particular occurrence, Hatou learns that Yukari is not the only person with a distinct viewpoint, known as "Qualia." Upon Yukari's admission to an institution for those with Qualia, Hatou becomes entangled in a dangerous web of intrigue that she must escape.