It is the Edo period. Ichitarou, the young master of Nagasakiya, one of the largest stores in Nihonbashi, has been in poor health since birth and is unable to go out. However, Ichitarou is always protected by demons such as Shirasawa and Inugami, who serve him. One night, Ichitarou goes out secretly and witnesses a murder. From that day on, bizarre murders begin to occur one after another in Edo... With the help of the demons, Ichitarou's search for the culprit begins!

Alma, an autonomous self-learning robot with advanced combat capabilities, was created by two genius scientists, Enji Kamisato and Suzume Yobane, who developed Alma's artificial intelligence and robotics, respectively. After being mocked by their former acquaintances, the duo have worked together in order to show the world their true talents. But even though they cooperate in their work, the two scientists cannot seem to get along in their personal lives. However, despite their constant bickering, Enji and Suzume develop a glint of mutual affection—feelings that do not go unnoticed by their adorable robotic creation. Now curious, Alma starts to question the true nature of her creators' relationship. As she learns more about humanity from those around her, Alma's bonds with Enji and Suzume only grow stronger.

Since ancient times, the ninja and the yakuza have been at war, spilling blood around the world as empires rise and fall. So when, in the modern age, Shinoha, a ninja, meets Kiwami, a gangster following the path of the yakuza—the gokudo—and discovers they have common interests, the obvious assumption is that nothing good can come of it. But can it be that one burgeoning bromance will shake up a 300-year grudge? Who will win the struggle for real ultimate power?

Kaede, an ordinary high school girl, suddenly wakes up in an unfamiliar alleyway—only to realize she's been transported to a mysterious world inhabited by beastmen, elves, and dragons. Among her belongings, she discovers a strange book that wasn't there before. To her surprise, it allows her to create potions simply by chanting the word "create." Relying on these potions to survive, Kaede navigates the challenges of this fantastical world while clinging to the hope of one day returning to Japan. Her journey of struggle and discovery in this otherworldly realm is just beginning...