Aya, Yoji, Ken, and Omi are the four young men who comprise Weiss Kruez (WK), an assassin group who eliminates certain menaces to society. Each member has his own trademark fighting style. Aya is adept at fighting with a katana, Yoji has mastered the art of strangulation via strings, Ken is lethal with his metal claws, while Omi specializes in a wide array of projectiles. Under the command of a mysterious man known only as "Persia", the WK is dispatched to take care of drug rings, terrorist factions, and the like. But as things go along, they discover that most, if not all, the bad elements they have dealt with are somehow connected to the Takatori family. The Takatori family is rich, powerful, and influential. It seems if the problem is to be nipped in the bud, the WK would have to put an end to one of Japan's most prominent clans.
Action Action anime usually involve a fairly straightforward story of good guys versus bad guys, where most disputes are resolved by using physical force. It often contains a lot of shooting, explosions and fighting. Bishounen Young man whose beauty (and sexual appeal) transcends the boundary of gender or sexual orientation. Original Work: Novel Note that novel means book with words in paper, so no comics and no "visual novels", which should go under manga and dating-sim - visual Novel/erotic game respectively.
Note that it can be applied to novels as we know them but also the typical light novels for teens and young adults, which are common in Japan and aside from being short include a number of illustrations.