Nightmare x sisters -Shuumatsu no Requiem | Nightmare×sisters Ω ～終末のレクイエム～

Setsu, Yuka, and Rinne, who had been continuously battling the Devil's Cult, embarked on rigorous training to level up further in preparation for the next battle.

However, they heard that the cult leader, the root of all evil, had begun moving again, prompting them to return from their training. They reunited with Kuon and Rei, who had fought the resurrected cult leader over the sacred artifact, the Raincloud Sword, and finally began their move to destroy the cult.

However, the cult leader, having obtained the Raincloud Sword, disappeared again, making it necessary to first locate him.

Setsu, who had to wait until the cult leader's whereabouts were known, proposed that everyone live together until the day of the final battle. There happened to be a suitable family dormitory in the city where the headquarters of the church Setsu and the others belonged to was located, and they began living together.

While enjoying peaceful days, albeit temporarily, Setsu and the others prepared for the upcoming final battle. Georgiy, an elite exorcist who had also accompanied Setsu and the others during their training, offered his assistance, raising their luck in defeating the cult leader. However…

Despite various accidents along the way, with the cooperation of Chisei and others they met at school, they gradually approached the final battle.

What awaited them at the end was either the pacification of the wicked demons or an endless abyss of depravity. And finally, the battle toward the end began.