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.