In the distant past, a war between humans and demons brought about widespread chaos and bloodshed. To put an end to this seemingly endless conflict, Demon King Anos Voldigoad willingly sacrificed his life, hoping to be reborn in a peaceful future. In preparation for their king's return, the demon race created the Demon King Academy, an elite institution tasked with determining Anos' identity when he reawakens. He reincarnates two millennia later, but to his surprise, he soon learns that the level of magic in the world has drastically waned during his absence. Moreover, when he enrolls at the academy to reclaim his rightful title, he finds out that demonkind remembers him differently. His personality, his deeds, and even his legacy are all falsified—masked beneath the name of an impostor. This "lack" of common knowledge renders him the academy's outlier—a misfit never before seen in history. Despite these drawbacks, Anos remains unfazed. As he sets out to uncover those altering his glorious past, he takes it upon himself to make his descendants recognize that their ruler has finally returned. [Written by MAL Rewrite]

The story takes place in the second half of the 19th century, as Japanese culture gains popularity in the West. A young Japanese girl, Yune, accompanies a French traveler, Oscar, on his journey back to France, and offers to help at the family's ironwork shop in Paris. Oscar's nephew and shop-owner Claude reluctantly accepts to take care of Yune, and we learn how those two, who have so little in common, get to understand each other and live together in the Paris of the 1800s.

Kaoruko "Chaos" Moeta is a young manga artist who is down on her luck. She wants to draw manga about high school girls, but her storyboards are bland, her art uninspired, and her premises weak. Her concerned, exasperated editor comes up with an idea: push Chaos to be more social. So, by her recommendation, Chaos moves into a dormitory for female manga artists. She soon meets the other residents: Tsubasa Katsuki, a shounen manga artist; Ruki Irokawa, who draws erotic manga popular with women; and Koyume Koizuka, a shoujo artist who, like Chaos, has yet to be serialized. Quickly striking up a friendship with these girls, Chaos finds new inspiration for her manga and continues to grow her creativity. Comic Girls is a showcase of the daily lives of these manga artists. Will Chaos finally be able to make her debut and become serialized? None of the girls know, but they will all do their best to help each other become the best artists they can be. [Written by MAL Rewrite]

When computers start to look like humans, can love remain the same? Hideki Motosuwa is a young country boy who is studying hard to get into college. Coming from a poor background, he can barely afford the expenses, let alone the newest fad: Persocoms, personal computers that look exactly like human beings. One evening while walking home, he finds an abandoned Persocom. After taking her home and managing to activate her, she seems to be defective, as she can only say one word, "Chii," which eventually becomes her name. Unlike other Persocoms, however, Chii cannot download information onto her hard drive, so Hideki decides to teach her about the world the old-fashioned way, while studying for his college entrance exams at the same time. Along with his friends, Hideki tries to unravel the mystery of Chii, who may be a "Chobit," an urban legend about special units that have real human emotions and thoughts, and love toward their owner. But can romance flourish between a Persocom and a human?