Revered as heroes for their role in defending Tristain, Louise Françoise and her familiar Saito Hiraga face heavy pressure to continue protecting the Kingdom. With an uneasy peace now established within Albion, the newly crowned Queen Henrietta must deal with a political struggle brewing on the horizon. To make matters worse, a new villain has begun plotting in the shadows against the Crown. With the continuing threats that face the Kingdom, Louise and Saito are compelled to work together once more. No longer Louise the Zero, the young mage's newfound aptitude for Void magic gives her enough power to wipe out an entire village; however, wielding these abilities comes with its share of challenges. As more conflicts arise, the idea of placing honor above oneself is put into question—regardless of their answer, their only choice is to see it through until the end.

After rescuing his master, Rias Gremory, from the Dimensional Gap, Red Dragon Emperor and aspiring Harem King Issei Hyoudou can finally return to his high school activities alongside fellow members of the Occult Research Club: Yuuto Kiba, Asia Argento, Xenovia Quarta, and Irina Shidou. The group soon embarks on a school trip to Kyoto. While peacefully visiting a temple thanks to Rias' spell, an attacking group of local youkai breaks the calm atmosphere. Once the altercation ends, the club learns that the mythical nine-tailed fox that protected the city was abducted and that someone has framed them for the act. Issei and his friends will now have to fight to protect the city and save their school trip from a planned disaster! In the meantime, Rias, who had to stay in Tokyo with Akeno Himejima and Koneko Toujou, grows increasingly restless to have left the perverted Issei alone with the other girls of the Occult Research Club. Beyond this vague anxiety, what is the exact nature of the feelings Rias has been struggling with for the past few months?

As Tooru continues on her quest to become the greatest maid and Kanna Kamui fully immerses in her life as an elementary school student, there is not a dull day in the Kobayashi household with mischief being a daily staple. On one such day, however, a massive landslide is spotted on the hill where Kobayashi and Tooru first met—a clear display of a dragon's might. When none of the dragons they know claim responsibility, the perpetrator herself descends from the skies: Ilulu, the radical Chaos Dragon with monstrous power rivaling that of Tooru. Sickened by Tooru's involvement with humans, Ilulu resorts to the typical dragon method of resolving conflict—a battle to the death. Despite such behavior, she becomes intrigued by Kobayashi's ability to befriend dragons and decides instead to observe just what makes Kobayashi so special. With a new troublesome dragon in town, Kobayashi's eccentric life with a dragon maid is only getting merrier.

At the Battle of Sekigahara in 1600, Toyohisa Shimazu is the rearguard for his retreating troops, and is critically wounded when he suddenly finds himself in a modern, gleaming white hallway. Faced with only a stoic man named Murasaki and hundreds of doors on both sides, Toyohisa is pulled into the nearest door and into a world completely unlike his own. The strange land is populated by all manner of fantastical creatures, as well as warriors from different eras of Toyohisa's world who were thought to be dead. Quickly befriending the infamous warlord Nobunaga Oda and the ancient archer Yoichi Suketaka Nasu, Toyohisa learns of the political unrest tearing through the continent. Furthermore, they have been summoned as Drifters to fight against the Ends, people who are responsible for the creation of the Orte Empire and are trying to annihilate the Drifters. As the Ends grow more powerful, so does the Empire's persecution of elves and other demihumans. It is up to Toyohisa and his group of unconventional heroes to battle in a brand-new world war to help the Empire's subjects, while challenging the Ends protecting the land to claim it for themselves.