With his muscular build and tall stature, Takeo Gouda is no ordinary high school freshman. However, behind Takeo's intimidating appearance lies a pure heart of gold, and he is considered a hero by his male peers for his courage and chivalry. Unfortunately for Takeo, his appearance does not bode well for his love life. As if his looks were not already enough to scare the opposite sex away, Takeo's cool, handsome best friend and constant companion Makoto Sunakawa easily, and unintentionally, steals the hearts of the female students—including every girl Takeo has ever liked. One day, when Takeo saves cute Rinko Yamato from being molested, he falls in love with her instantly. Unfortunately, he suspects that she might be interested in Sunakawa. Despite his romantic feelings for Yamato continuing to bloom, Takeo decides to act as her cupid, even as he yearns for his own love story.

Aspiring light novel author Yuu Nagami regularly enters writing competitions but has yet to win a single one. Despite his recurring failures, he remains steadfast in his resolve to become a better writer. When he takes a look at the list of winning authors in the latest contest he joined, he notices that someone named Chikai Towano dominated the competition. He soon discovers that behind the pen name is his sister Suzuka—the last person he can imagine being an author. Suzuka cannot reveal to anyone that she is Chikai Towano and requests her brother to take her place. Yuu agrees with one condition: he will continue posing as Chikai Towano for his sister until he publishes his own book. Until that happens, Yuu uses his new identity as an opportunity to improve his writing skills and meet fellow authors and new acquaintances along the way.

For Kanade Amakusa, life as a high schooler should have been normal, and it would have been—if he wasn't living with the most ridiculous curse imaginable. Absolute Choice, a system forced upon him by a self-proclaimed god, randomly presents a mental selection of actions that he must act out based on his choice. To add to his dilemma, it tends to occur in the most public of places, and his options never seem to deviate from the rude and crude in nature. As a result, the helpless boy stresses through each day, fumbling to repair his already tarnished reputation while desperately praying to avoid the next spontaneous episode of Absolute Choice. To his dismay, the one in charge is always one step ahead of him and proceeds to not-so-subtly choice him into the lives of several girls at his school. Just when Kanade's school life can't seem to be doomed any further, a decision that he reluctantly selects on the way home sends a beautiful girl crashing down from the sky, along with the promise of more hysterically hellish choices.

Twintails: the glory of all mankind—or at least that is what first-year high school student Souji Mitsuka believes. At school, Souji spends most of his time daydreaming and rating girls' twintails, even going as far as creating a club dedicated to the hairstyle. His obsession does not go unnoticed, however; when monsters from outer space attack Earth and claim the world's twintails for themselves, a strange woman named Twoearle enlists Souji to fight back using twintails of his own! By transforming into the twin-tailed warrior Tail Red, Souji combats the vicious alien organization known as Ultimegil, whose main goal is to colonize Earth and steal everyone's spiritual energy, or attribute power. Alongside fellow twin-tailed fighters Aika Tsube and Erina Shindou, Souji must find a way to defeat the invading army and defend the twintails he holds so dear.