2007
Being a single mother is hard in early 19th Century France. When young Cosette was traveling with her mother trying to find a job and a place to live, they were always shunned away because very few employers hire single mothers. When she is promised with the prosperity of working in the big city, Cosette is separated from her mother in the hopes a caretaker will watch over her while her mother earns some money.
2014
Arisu, Karube, and Segawa, a trio of highschool delinquents, are bored with their current lives. During a firework celebration, Arisu wishes that he could live in a different world which would be more exciting for him. As such, his wish was granted, and the three were transported into a seemingly post-apocalyptic-like parallel world. After stepping into what seems to be an empty festival, they are greeted by a woman who tells them that they have already "entered their game". After clearing the game, she reveals to them that, in Borderlands, they must play games to survive.
It is the year 2030, and the stage is the capital of Japan, Chou-Tokyo. Through "Buddyfight", humans have started cultural interactions with residents from other worlds called "Affinity Dimensions". Buddyfight is a game with selected humans as the "Buddyfighter", and residents from the other world as the partner (known as "Buddy Monster"). These battles have high significance and sometimes it is even used to decide the fate of a nation, and naturally there are those who seek to use the Buddy Monsters for evil purposes.
1978
Brilliant scientist Sōzō Haran was conducting research on Mars when he created the Meganoids, a new form of cyborg life capable of metacognition. Suddenly Dr. Haran lost control of his creation as the Meganoids slaughtered him and his entire family, save his youngest son, the 16-year-old Banjō Haran. Banjō escaped from Mars on a rocket ship with Daitarn 3, a solar-powered super robot. Now 18 years old and living on Earth, Banjō fights against the Meganoids and their leader, Don Zauser. Banjō must gather allies to help him stop the Meganoid threat, which aspires to turn all humans into cyborgs and "improve" the human race.
1994
One fateful day, Karin, a junior-high student, found what she thought was an injured piglet. However, the piglet was just exhausted from hunger. After the piglet regained his health by eating Karin's apple, he revealed that he is a prince, Tonrariano III, from a planet called Booringo. Tonrariano wanted to reward Karin for helping him and so he transformed her into a pig with superpowers. Karin was not at all pleased with the gift because she wanted to become a pretty superheroine like "Cutey Chao" (a parody of Cutey Honey), not Super Pig. Reluctantly, she became more interested in her role as Super Pig when she found out that she can turn into someone like "Cutey Chao" if she can collect 108 pearls through doing good deeds for other people.
1993
Doc Ido, a doctor and mechanic who lives and works in the postapocalyptic "Scrapyard", finds the remains of a female cyborg in a junk heap. After he revives and rebuilds her, the amnesiac "Gally" begins a life for herself in a world where every day can bring a new fight.
2017
In a futuristic society, Japan has implemented a complex system referred to as "The Red Threads of Science" to encourage successful marriages and combat increasingly low birthrates. Based on a compatibility calculation, young people at the age of 16 are assigned marriage partners by the government, with severe repercussions awaiting those who disobey the arrangement. For Yukari Nejima, a teen that considers himself average in every way, this system might be his best shot at living a fulfilling life. However, spurred by his infatuation for his classmate and long-time crush, Misaki Takasaki, Yukari defies the system and confesses his love. After some initial reluctance, Misaki reciprocates his feelings in a moment of passion. Unfortunately, before the two can further their relationship, Yukari receives his marriage notice. He is then thrown into a confusing web of love and lies when his less-than-thrilled assigned partner, Ririna Sanada, becomes fascinated with his illicit romance.
The year is 1863 as the tumultuous samurai era is coming to an end, Japan is split between the pro-shogunate and anti-shogunate factions. The fate of the world is threatened as an army of historical revisionists are sent from the future to alter the course of history. In order to bring these forces down and protect the real history, two sword warriors, spirits who are swords brought to life by Saniwa (sage), rush to Edo. The polite and thoughtful Horikawa Kunihiro and the short tempered yet skillful Izuminokami Kanesada, who served the same master, confront the invading army along with a lively gang of other warriors including Mutsunokami Yoshiyuki, Yagen Toushirou, Tombokiri, and Tsurumaru Kuninaga. As the fate of history lies in these hero's hands, what meets the blade is yet to be uncovered...
