Ever since they encountered aliens on the moon, humanity's technology has developed by leaps and bounds. Half a century later, even though most have it easy, Robby Yaji and Hacchi Kita cannot seem to catch a break in this advanced society. Robby—a man perpetually struck by misfortune—owes large sums of money to debt collectors due to his poor investments in shady get-rich-quick schemes, and Hacchi finds it difficult to get over the boredom of his mundane life. The two end up on an adventure of a lifetime when loan shark boss Yang sends Hacchi to collect the money Robby owes. Rather than pay up, Robby blasts off into space and heads to Isekandar, a planet that supposedly brings happiness to anyone who visits. Seeing a chance for some much needed excitement, Hacchi tags along with Robby on this journey filled with alien encounters, giant robot battles, and all sorts of troublemaking—all the while avoiding Yang and his cronies who are desperately combing the universe to find them. [Written by MAL Rewrite]

Iwaki Tomonori is an average 15-year-old boy who likes older women. He happens to have a crush on his teacher, but soon thereafter, learns she has become engaged. He heads home brokenhearted, only to find a 12-year-old girl named Rizel at his home, who he learns the Japanese government has married him to against his will. Furthermore, he learns Rizel is no ordinary girl; she is a biochemically engineered human, and her creators (her "papa"s, as they are often referred to) promise to waive multiple bills of Iwaki's parents in exchange to be allowed to stay at their house, and thus Iwaki's life with Rizel begins.

It has always been the aspiration of the Central Tanegashima High School Robotics Research Club to complete the GunPro1, a fully functioning giant robot. For years, the members of the club have contributed to its progress and it is now Akiho Senomiya's goal to finally make the dream of all the past club members become a reality. However, things are not as easy as they seem as the club lacks the funding for such a huge endeavor. Aside from that, the only other club member, Kaito Yashio, shows no interest in assisting his childhood friend and instead indulges in playing mecha-fighting games on his "PokeCom." As Kaito is in the middle of wasting his days, he receives an indecipherable message and hears a voice that seems to be drowned out by the noise of static. He searches for the source, only to realize that it came from Airi Yukifune, an AI which only exists within the augmented reality system accessible via the PokeCom. Robotic;Notes follows the story of Kaito as he discovers a peculiar report in Airi's database, one that would have disastrous consequences in the future. [Written by MAL Rewrite]

Saiga is a normal high school student with a gift in mathematics. His daily routine is disrupted when his family gets news that his Father's remains have been discovered—a noted archeologist and researcher who had gone missing while exploring a site many years before. Among his remains were notes and artifacts that needed to be identified by the family near a notable triangular mountain in Japan known as "Japan's pyramid", a place suspected by some to be man-made. A meteor containing a strange robotic lifeform falls from the sky and begins to cause destruction, putting Saiga in danger and causing a mysterious bracelet from his father's research to activate and merge him with an ancient robot burried within the pyramid—a robot the runes describe as Reideen. It is now up to Saiga and guardian Reideen to fight against this unknown alien threat from the sky. (Source: ANN)