Ever since childhood, Scarlet El Vandimion has preferred to deal with wrongdoers by using her fists. However, to preserve her family's image, she suppresses her instincts and tolerates the abuse inflicted by her childish fiancé, Second Prince Kyle Von Pallistan. Only Kyle's brother, First Prince Julius, is aware that there is more to Scarlet than meets the eye, but she cares little about his growing interest. In the middle of a ball, Kyle accuses Scarlet of harassing Terenezza Hopkins, a commoner that has taken his heart. Scarlet's engagement to Kyle is nullified, leaving her outraged that all of her efforts to endure thus far have amounted to nothing. Scarlet dons her studded leather gloves, once again becoming the "Mad Dog Princess." Joined by Julius and werebeast Nanaka, Scarlet is ready to give filthy nobles a taste of their own medicine—one punch at a time.

Two years ago, the death of Naoto Watari's parents left him as the sole caretaker for his younger sister Suzushiro "Suzu" Watari and forced him to move in with their aunt. So devoted is he to Suzu that he refuses to join clubs or even hang out with anyone, earning him snide comments and the title of "siscon" at his new school. But as long as Suzu is safe and happy, Naoto doesn't care what everyone else says. However, his sneering classmates may turn out to be the least of his worries. The sudden transfer of a girl named Satsuki Tachibana brings back traumatic memories from his past—a past she had a hand in making so unpleasant. Nasty secrets, unknown to Naoto, begin to surface with her arrival, threatening his new life.

Early 2000s Tokyo. Isobe, a combatant for the evil corporation Ganglion, spends his days on the battlefield. Whether it's the "Tokyo Cedar Pollen Operation" or the "Mount Fuji Demolition Plan," he faces off in nothing but a bodysuit, only to be crushed by the hero Hopeman time and again. As he struggles under unreasonable bosses during the dawn of compliance, his story unfolds—a workplace drama dedicated to all who work, following the bittersweet life of a salaryman soldier.

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!