Beginning her academic journey as a first grader, Shiori comes face to face with the aspect of school she has heard alarming rumors about—homework! However, her worries quickly turn into excitement as the Asahigaoka girls agree to work together to complete their assignments at Komari and Natsumi Koshigaya's house. Their plan appears to be successful until an all-too-familiar feeling of procrastination creates a rowdy distraction for Natsumi. On another day, Natsumi asks her teacher Kazuho Miyauchi if she can form and lead a new badminton school club. While the lack of funding and equipment proves to be a major setback, it does not stop Natsumi and the other girls from asking the candy store owner Kaede Kagayama for some help. During their spontaneous badminton practice, a minor accident leads Kaede to reminisce about a memorable day when she babysat Renge Miyauchi.

After their parents' deaths, brother and sister Akito and Akiko Himenokouji were forced to live with separate families for six years. But now they have finally reunited and begin to live together. It quickly becomes apparent that Akiko harbors romantic feelings for her brother; however, Akito only sees her as a sibling. When three more girls—Anastasia Nasuhara, Arashi Nikaidou, and Ginbei Haruomi Sawatari—move into their apartment, Akiko's hopes of living alone with her brother vanish. Moreover, these girls also like Akito in one way or another, making it even more difficult for Akiko to gain her brother's undivided attention. As the girls fight over who should take care of Akito, they display various eroticisms that may be a little too much for a normal man to handle.

Short specials included in the Onii-chan Dakedo Ai sae Areba Kankeinai yo ne Blu-rays and DVDs.

As peace returns to the demon realm, Anos Voldigoad wishes nothing more than to put his reputation as the Demon King of Tyranny to rest and go back to being a misfit at the prestigious Demon King Academy. Unfortunately, any tranquility is fleeting: sinister demons, kings, and deities plot Anos's demise from the shadows. Rumors spread about the "Child of God," a being whose power may rival that of Anos. To uncover the truth and eliminate the potential threat, Anos must journey deep into the land of spirits. However, the spirit world is shrouded in mystery, and it may only be entered after undergoing a series of difficult trials. With unrivaled power and confidence, Anos braces himself to defeat various formidable enemies with grandiose titles. But he—with the assistance of his trusted allies—will barely have to break a sweat as the true Demon King of Tyranny.