It was just a usual morning. Akira Shiroyanagi, a high schooler who loves games and Konpeito (Japanese sweets), has suddenly been dragged into a battlefield by a mysterious girl who calls herself Mion. The participants are told that they are "erased from the family register, involved in an experiment, and gained certain powers." Akira is determined to win the game with his newfound powers and destroy the organization. Armed with a power no one expects and his "brain" skills, the new period of intelligence battle begins! (Source: MU, edited)

Akemitsu Akegami was always told by his father that "no one can live alone"...but he's sure determined. After all, his father sure wasn't saying it with the best intentions, and Akemitsu has no desire to become like that creep. But when a chance encounter with a young woman leaves him with thoughts that are all too impure, he decides to do what he must—become a Buddhist monk and renounce worldly ways. But the temple he decides to devote himself to...is full of women? And that same young woman is there, too?? What's a guy to do?

The fierce battle between Meliodas, the captain of the Seven Deadly Sins, and the Great Holy Knight Hendrickson has devastating consequences. Armed with the fragments necessary for the revival of the Demon Clan, Hendrickson breaks the seal, allowing the Commandments to escape, all of whom are mighty warriors working directly under the Demon King himself. Through a mysterious connection, Meliodas instantly identifies them; likewise, the 10 Commandments, too, seem to sense his presence. As the demons leave a path of destruction in their wake, the Seven Deadly Sins must find a way to stop them before the Demon Clan drowns Britannia in blood and terror. [Written by MAL Rewrite]

While saving a child from harm, otaku Asahi Ikusaba is transported to another world and believes he has reincarnated with cheat skills similar to those of the characters from his favorite games and novels. Unfortunately, reality strikes when an encounter with a powerful monster shows that he is still nothing more than an average person. In this moment of extreme danger, Asahi instinctively calls out to his overly doting sister, Maya, who appears out of nowhere, possessing the overpowered abilities he thought he had. Maya is ecstatic to see her brother again and resolves to use her newfound powers to protect Asahi no matter what. Together, the close-knit siblings attempt to find a way back home while enjoying their new lives. However, it soon becomes clear that their arrival in this world may have had a purpose. With the Demon King's overwhelmingly powerful army approaching, no one but Maya seems to be able to stand in its way.