Six months have passed since the victorious Battle of Britannia and the reclamation of Gallia from Neuroi invaders. Yoshika Miyafuji, member of the famed 501st Joint Fighter Wing, has come back home to Fuso and graduated from middle school. However, her fight is far from over. She receives a letter supposedly sent by her long-deceased father, containing blueprints of a state-of-the-art Striker Unit he had been working on before his death. The Unit, designed specifically for Yoshika, might be capable of harnessing her extraordinary magical powers. Meanwhile, a new threat in Europe is rising. A Neuroi nest of an unprecedented size and might has appeared over Venezia, wiping out local Witch forces and instantly swallowing the northern part of the country. To make matters worse, a newly spotted humanoid type of Neuroi is attempting to come into contact with humans. Yoshika, incapable of abandoning her friends on the front lines, must once again venture to the war-torn continent.

"Huey" Anthony Disward and Dalian trek to the land owned by Sergeant Callavos, where it is rumored that a Phantom Book may be located. With the help of a local herbalist named Thalia, the two reach a remote village and begin to confirm relevant information to their investigation. Although it has been reported that Callavos perished alongside his family in a gruesome fire six months prior, his daughter Florence has been sighted in a nearby forest—and is suspected of causing the blaze. To verify these allegations once and for all, Huey and Dalian travel to the lord's manor, only to uncover the truth behind a thorny past.

Reinya appears to be an ordinary girl working at a convenience store but she is in fact, the Phantom Thief Reinya. Together with her assistant Chūtarō in their secret hideout right below the local convenience store, Reinya hatches plans to steal various treasures made of gold. They face an incompetent trio of a perverted police inspector, a policewoman who is a natural airhead, and a detective totally infatuated with Reinya, all of them in a police station beside Reinya's convenience store. (Source: ANN)

Running into your new stepsister in the bathroom is not the best way to make a good first impression, which Basara Toujou learns the hard way. When his father suddenly brings home two beautiful girls and introduces them as his new siblings, he has no choice but to accept into his family the Naruse sisters: busty redhead Mio and petite silver-haired Maria. But when these seemingly normal girls reveal themselves as demons—Mio the former Demon Lord's only daughter and Maria her trusted succubus servant—Basara is forced to reveal himself as a former member of a clan of "Heroes," sworn enemies of the demons. However, having begun to care for his new sisters, Basara instead decides to protect them with his powers and forms a master-servant contract with Mio to keep watch over her. With the Heroes observing his every move and the constant threat of hostile demons, Basara has to do the impossible to protect his new family members. Moreover, the protector himself is hiding his own dark secret that still haunts him to this day...