The Ant-Man in the Grass

"'Ninjas' are widely known, yet few know of 'grass'. 'Grass' are those who, as part of an extended espionage campaign, will live in enemy territory and assimilate with residents as one of their own. They will blend in, even participate in local activities, all the while quietly gathering information. Among the 'grass' there is one with an even more amazing ability. He is the 'Ant-Man'."