Aya, Youji, Ken, and Omi are the four young men who comprise Weiss Kreuz (WK), an assassin group that eliminates certain menaces to society. Each member has his own trademark fighting style. Aya is adept at fighting with a katana, Youji 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. (Source: AniDB)

Bad Luck's lead singer and lyricist, Shindou Shuichi, is a total wreck. With deadlines for the band's next album looming, the pressure is on, but the normally energetic Shuichi has become listless and fallen into a writing slump. It's all because Yuki - the great love of his life - has suddenly become cold and distant. Depressed and anxious, Shuichi doesn't want to think about lyrics - he just wants to know how to get Yuki to talk to him! Now, thanks to Shuichi's big mouth bragging to the press about how talented he is, the band can't even hire someone else to write the lyrics for them. If they don't manage to break Shuichi out of his slump soon, it could mean the end of Bad Luck for good! (Source: RightStuf)

Kananase Yu is just an ordinary high-school student. Since he has mysterious inside knowledge about piloting a mecha, he is recruited by the International Military Organization as a potential test pilot for a new mobile armor. However, apparently there are other young recruits around his age, including one of his classmates, were recruited as test pilot as well. Now Kananase Yu must prove that he is the best to be the test pilot. (Source: ANN)

Ryu, the current Street Fighter champion, must overcome the power of the "Dark Hadou" which consumed Akuma, the brother of his sensei, Gouken. Plus, he deals with the unexpected arrival of Shun, a young boy who proclaims to be his long-lost brother. (Source: ANN)