During their quest in the feudal era to recover the shards of the miraculous Shikon Jewel, Inuyasha, Kagome Higurashi, and their friends become the target of Menoumaru Hyouga—a demon awakened by one of the Shikon fragments, now in pursuit of Inuyasha's heirloom sword Tessaiga. Following a clash between the fathers of Inuyasha and Menoumaru, the weapon is the only means to restore Menoumaru his rightful family heritage. However, upon ambushing Inuyasha, Menoumaru discovers that Tessaiga's owner alone can wield it. Determined to achieve his objective regardless, he kidnaps Kagome to force Inuyasha to use his blade and release the sealed powers of the Hyouga clan. With their dependable companions' assistance, Inuyasha and Kagome oppose Menoumaru, unaware that his sinister intentions and alarming potential will endanger not only their world but also its distant future.

Ichirou Kuga has suddenly found himself taking on the responsibility of caring for his two younger siblings after their father's untimely death. To make ends meet, Ichirou rents out rooms in the apartment complex he inherited and works full-time as a shoujo manga artist. However, his manga sales are low, his assistants have recently left, and deadlines are fast approaching. As stress threatens to overtake Ichirou, salvation comes in the form of an extremely competent novice artist, Shiori Goshiki, who becomes his new assistant. With her skills, they are able to tide over the difficult situation, and things begin looking up. But in a bizarre accident, a supernatural experience unfolds between Ichirou and Shirou, which leads her to declare them engaged. With this seemingly innocuous action upending his life, Ichirou now has to manage his new and peculiar relationship with the mysterious girl, all the while following his own passion and fulfilling the duties that rest on his shoulders.

Fumiya Tomozaki is now cruising through the game of life—all thanks to the guidance of Aoi Hinami, his popular classmate and rival in the online game Attack Families, widely known as Tackfam. As the summer holiday draws to a close and a new term commences, Tomozaki reunites with Aoi, who reminds him of his ultimate goals: to become well-liked among his peers and find himself a girlfriend. However, Tomozaki puts his ambitions on hold when his innocent friend, Hanabi Natsubayashi, starts being bullied. To make matters worse, Aoi is characteristically out of touch with the situation. But Tomozaki is not alone in resolving this issue—he now has a group of loyal friends who are all determined to help Hanabi and ensure they enjoy their youths together to the fullest.

During their martial arts training expedition in China, Ranma Saotome and his father Genma suffered an accident, which in turn, afflicted them with a curse—whenever they are doused with cold water, Ranma transforms into a girl, while his father turns into a panda! Only hot water can reverse these changes, but any further contact with cold water opens the can of worms once more. Unfortunately, the trouble does not end there, as Ranma finds out about his betrothal to one of the daughters of Soun Tendou, his father's closest friend. During the families' first meeting, it is decided that Ranma is to be married to Akane, the youngest daughter, a decision that is met with vehement protests from both sides. The two are simply not compatible, yet they are forced to live under one roof. Ranma's status quo further adds to the chaos, leading him to a series of comedic situations and misunderstandings that, in the grand scheme of things, may just be what he needs to work with Akane.