Kurogane No Linebarrels

Hayase Kouichi is your typical indecisive and naive Japanese boy, pushed around by bullies and liked by no one save a small group of friends. However, this changes one day when he is playing errand-boy for one of the bullies, who demand that he purchase some snacks for them to eat. While on his merry way, a mobile suit vehicle is dropped on him, knocking his brains out. When he recovers, he finds himself and his hand upon the creamy thigh of a naked, beautiful woman. Somehow, fate has chosen him to be the pilot of a huge, mobile suit of armor called "Linebarrel". And to active the machine, all he needs to do is to press his virgin hand upon the big soft breast of the naked woman we were talking about earlier.