On the surface, it's about some guys and gal got given a special suits that allow them to perform superhuman activities: high jump, strength, armor, unlimited Net access with huge processing power, and later on, laser claws. And what they did with them? Then later on the superior versions of those suits are in public use and some upheavals from that.
There some sex scenes but not too crude. Pretty logical if you know Japanese, actually.
Second layer, it seem like a message aim toward those shut-in hermits and 'whatever' youth of Japan today.
Third layer, a message about the politic system, as well as media. It's pretty interesting.
ON the whole, this is one good manga. Not at the level of Sanctuary, but worth reading.
My only complaint is that the suits are a product result from secret t venture of several Asian goverments. A secrets known to 3 governments and it can still be kept secret? I dont think so. 1 is possible. 3 is... unlikely.