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In the future, mankind faces a terrible dilemma: overpopulation! The origin of this epidemic has been traced to one young man named Junta who, in his time period, is destined to become the Mega-Playboy who fathers 100 children (though currently, he vomits uncontrollably whenever a woman gets near him!). Karin is a DNA Operator who has been sent back in time to put a stop to the budding playboy's hormones, but accidentally becomes the cause of his transformation! As if things couldn't get worse, is Karin actually... falling in love with Junta?!
An ordinary high school student named Bon becomes part of a team of time-traveling agents tasked with saving people's lives during historical events that happen across different eras and locations around the globe.
Nobita comes up with the idea of running away from home because he is always being scolded at home and at school. Additionally, Gian, Shizuka, and Suneo all have their own reasons for running away from home. Together with Doraemon, they all travel through time to the Japan of 70,000 years ago.
Nobita had to find a topic for his summer break research homework. As he was blaming everything to Adam and Eve for sinning and causing their descendants to suffer (from homework), Doraemon decided to provide him with a gadget to observe the creation of the world so that he may write it in a diary-like report. Suneo, Giant and Shizuka eventually joined them and together they watch over the birth of tribes and civilizations. Meanwhile, the time patrol is looking for an illegal time machine whose controllers accidentally heard Giant speaking of the genesis diary project. They captured Giant and Suneo, leaving Nobita, Shizuka and Doraemon to watch over the genesis set and to rescue them.
Humanity wasn’t prepared for the orbital fortress Death Mask to break in half and fall towards the ground, landing on two cities and sending them 10,000 years into the future. Gai is a time traveler who’s sent to determine the fate of those who were lost, with his stowaway little brother at his side. But what the pair didn’t expect to find is a barren, fantasy landscape filled with tribal warriors, slave traders and mystical creatures. Together with newfound friend Emiya, the boys find themselves in the midst of a tumultuous struggle between the evil Pirar and the people he’s enslaved.
In the future, Earth has become a desolate wasteland where few remain. One man, Paradox, is on a mission to save the future by travelling through time and destroying the source of this widespread destruction: Duel Monsters. After stealing several prominent Dragon-Type monsters throughout history and causing massive devastation in several time periods, Paradox has antagonized and inadvertently assembled three of the greatest duelists to ever draw a card: Yuusei Fudo, Judai Yuki, and Yugi Motou, the King of Games. Now, the trio must challenge this imposing foe to save their world in a tag-team duel that spans the ages. But will a bond of friendship forged across different eras be enough to defeat someone capable of such terrible acts? It’s time to duel!