Recap voice dramas of main characters posted online and later included in Blu-ray volume 2 of main series.

Hisoka was an orphan who was raised by Yukitaka, the present head of the worldwide Jinsei Corporation, with the help of his right-hand man Daisuke. He was adopted for the sole purpose of working both publicly and secretly for his daughter Orihime, who was next in line to inherit the business. That’s why he did not hesitate when he was asked by Yukitaka to attend the same school as her and serve as her bodyguard in secret. The only problem was that her school was the refined Saint Ceral Girls’ Academy, which was closed to boys. He didn’t know it at the time, but it would be a major turning point in his life. (Source: VNDB, edited)

Ainz Ooal Gown, the undead sorcerer formerly known as Momonga, has accepted his place in this new world. Though it bears similarities to his beloved virtual reality game Yggdrasil, it still holds many mysteries which he intends to uncover, by utilizing his power as ruler of the Great Tomb of Nazarick. However, ever since the disastrous brainwashing of one of his subordinates, Ainz has become wary of the impending dangers of the Slane Theocracy, as well as the possible existence of other former Yggdrasil players. Meanwhile, Albedo, Demiurge and the rest of Ainz's loyal guardians set out to prepare for the next step in their campaign: Nazarick's first war… Overlord II picks up immediately after its prequel, continuing the story of Ainz Ooal Gown, his eclectic army of human-hating guardians, and the many hapless humans affected by the Overlord's arrival.

Mikoto Shinozaki is a high school student lacking in social awareness. In addition, due to his untidy appearance and low self-esteem, he is an easy target for bullies. Regardless, any misfortune that falls upon Mikoto is partly his own fault—at least, that is what Yuki Fukuzawa, the most popular girl in class, believes. With this assumption, Yuki invites Mikoto to join the school's bicycle club, in hopes he can improve himself and gain new friends. Motivated by feelings he has for Yuki, Mikoto has no reason to decline her offer—except for the fact that he does not know how to ride a bicycle. Despite his lack of even the fundamentals, Mikoto cannot get over the image of himself on a bicycle. Eventually, he succumbs to his curiosity and sneaks into the school grounds at night to practice. This begins Mikoto's journey as he pedals his way through the vast world of cycling, where the scenery of his life changes in ways he never thought possible.