In the year 20XX, Japan enacts the “Senior National Law.” On his way to work, junior citizen Ikeda Kazuki is suddenly attacked by a senior citizen. Seniors fire recklessly and mercilessly slaughter anyone of lower status. Just as the muzzle turns on Kazuki—an enormous piece of metal hurtles down from the sky and fuses with him, transforming into a battle suit! Set in a dystopian near-future Japan, this is an exhilarating battle-action story of a boy who comes into possession of the most powerful “Cheetahweight” battle suit!