Riki Katsuo, who looks tough but is a coward and was bullied in middle school, enrolls in Hanazawa High School to start anew. Riki walks with a gun, believing that the first step is the most important thing, and with a strange look on his face, he drives away a man who tries to pick a fight with him. Ishida Tetsutaro, who saw this, asks him to become his underling. For the next three days, Riki lives a rosy life, but then a muscular guy with glasses challenges him to a duel...!?

Gouseiken Dai Sword" is a manga work by Yuichi Hasegawa. It is an adventure fantasy manga in which the main character, Ota Momochi, and 550 other junior high school students are transported from their school to a different world of swords and magic.

The story follows Robocon, a student of Gantz' Robot Academy who lives amongst humans and aids them as part of his studies. Though Robocon is a screw up, he makes efforts to establish a good image for robots in the eyes of humans they cross paths with.