Koyomi Araragi has recently survived a vampire attack and met several girls plagued by supernatural entities. On top of all this, he wakes up one morning to find himself kidnapped and tied up by his girlfriend Hitagi Senjougahara. Araragi's sister Karen has run afoul of Deishuu Kaiki, a swindler who once conned Senjougahara's family. As a result, Senjougahara has imprisoned Araragi to keep him safe from the devious Kaiki. But when Araragi receives a frantic message from Karen, he sets out to rescue her. Along with Karen's troubles, Tsukihi, Araragi's other server, faces issues of her own. And when two mysterious women step into their lives, not even Araragi can anticipate their true goals, nor the catastrophic truths about his family soon to be revealed.

One year ago, Sagiri Izumi became step-siblings with Masamune Izumi. But the sudden death of their parents tears their new family apart, resulting in Sagiri becoming a shut-in which cut her off from her brother and society. While caring for what's left of his family, Masamune earns a living as a published light novel author with one small problem: he's never actually met his acclaimed illustrator, Eromanga-sensei, infamous for drawing the most lewd erotica. Through an embarrassing chain of events, he learns that his very own little sister was his partner the whole time! As new characters and challenges appear, Masamune and Sagiri must now face the light novel industry together. Eromanga-Sensei follows the development of their relationship and their struggle to become successful; and as Sagiri slowly grows out of her shell, just how long will she be able to hide her true persona from the rest of the world?

According to the Republic of San Magnolia, their ongoing war against the Giadian Empire has no casualties—however, that is mere propaganda. While the silver-haired Alba of the Republic's eighty-five sectors live safely behind protective walls, those of different appearances are interned in a secret eighty-sixth faction. Known within the military as the Eighty-Six, they are forced to fight against the Empire's autonomous Legion under the command of the Republican Handlers. Vladilena Milizé is assigned to the Spearhead squadron to replace their previous Handler. Shunned by her peers for being a fellow Eighty-Six supporter, she continues to fight against their inhumane discrimination. Shinei Nouzen is the captain of the Spearhead squadron. Infamous for being the sole survivor of every squadron he's been in, he insists on shouldering the names and wishes of his fallen comrades. When the fates of these young souls from two different worlds collide, will it ignite the spark that lights their path to salvation, or will they burn themselves in the flames of despair?

Roaming the halls of the all-boys Sanada North High School are three close comrades: the eccentric ringleader with a hyperactive imagination Hidenori, the passionate Yoshitake, and the rational and prudent Tadakuni. Their lives are filled with giant robots, true love, and intense drama... in their colorful imaginations, at least. In reality, they are just an everyday trio of ordinary guys trying to pass the time, but who said everyday life couldn't be interesting? Whether it's an intricate RPG reenactment or an unexpected romantic encounter on the riverbank at sunset, Danshi Koukousei no Nichijou is rife with bizarre yet hilariously relatable situations that are anything but mundane.