Even though Sasaki's droll corporate life is constantly filled with work, it leaves him tired and unfulfilled at the end of every day. In search of some companionship to fill the emptiness in his life, he visits a pet shop on a whim, not realizing he's about to change his life forever. After settling on an adorable bird and bringing it home...his new roommate reveals that it's actually an incredible sage from another world who promptly bestows Sasaki with supernatural powers as well as the ability to cross between worlds. All Sasaki wants to do is use these newfound powers to live in peace and comfort, but there are more than a few colorful characters who might get in the way of that...

In a world where death is not permanent, Terakomari "Komari" Gandesblood has been a self-proclaimed professional shut-in for the past three years. As part of the noble Gandesblood lineage, she once tried to meet the expectations of her family. However, as a vampire who cannot use magic or consume blood, she soon gave up on becoming an imperial general like her ancestors. Unfortunately, a misunderstanding with her father earns her the formidable position of one of the Seven Crimson Lords, the strongest fighters and generals in the Mulnite Empire. Now, Komari must hide her lack of talent from the soldiers she commands, or they may attempt to overthrow her. Working alongside her newly-assigned maid, Villhaze, Komari manages to trick her unit of soldiers into believing she is a ruthless warlord and promises to conquer the world. But as more people come to admire Komari, her life is further threatened as a vampire from her past reappears with every intention to kill her for good.

High school student Makoto Itou first notices Kotonoha Katsura at the start of his second semester, freshman year. Immediately, he becomes entranced by her beauty, but his bashfulness doesn't allow him to approach her, even though they ride the same train every day. Instead, he snaps a photo of her in secret and sets it as his cell phone's wallpaper: a charm that, if kept under wraps, would supposedly help you realize your love. However, classmate Sekai Saionji spots the picture, but instead of ratting him out, she offers to help set him up with Kotonoha—going so far as befriending her just for him. Thus, the trio begins a rather impromptu friendship. School Days follows the lives of these three teenagers as they traverse the joys and hardships that come with being a high schooler. In a story alive and brimming with romance and melancholy, the tale of these three students will linger in memory long after the momentous conclusion. [Written by MAL Rewrite]

Kirino Kousaka embodies the ideal student with equally entrancing looks. Her grades are near perfect, and to cover her personal expenses, she works as a professional model alongside her best friend Ayase Aragaki, who abhors liars and all things otaku. But what Ayase doesn't know is that Kirino harbors a deep, entrenched secret that will soon be brought to light. At home one day, Kyousuke, Kirino's perfectly average brother, stumbles upon an erotic game that belongs to none other than his seemingly flawless little sister. With her reputation at stake, Kirino places a gag order on her sibling while simultaneously introducing him to the world of eroge and anime. Through Kirino, Kyousuke encounters the gothic lolita Ruri Gokou and the bespectacled otaku Saori Makishima, thus jump-starting an entirely new lifestyle. But as he becomes more and more involved in his little sister's secret life, it becomes that much harder to keep under wraps. [Written by MAL Rewrite]