ZKD Trilogy

The ZKD Trilogy ("Zodiac Knight Draco") is a three-volume, 300-chapter story, written by Kamen Rider Chrome. It initially blends Teen Titans and Kamen Rider Ryuki, and later adds in elements from Kamen Rider 555, Kamen Rider Kabuto and numerous other works.

The first volume was Chrome's first story, with 100 chapters and the story that started it all. The story is about the Teen Titans as they become involved with warriors known as Zodiac Knights after meeting a red knight called Draco. Soon, other Zodiac Knights appear and the Titans become more and more involved in the Zodiac War, a tournament where the Zodiac Knights must battle until only one remains. Draco, Shadowcobra and Pluto end up joining the Titans after befriending their group, defending the city from super-criminals and evil-doers. But lurking is the shadows is Copycat, a Zodiac Knight who has allied herself with Slade. The story soon evolved into a Mega Crossover, borrowing characters from other anime and cartoon franchises. Also, it possesses elements of other Kamen Rider series. It Kamen Rider Chrome's longest story and there are also oneshots which tie into the main story.

The core stories are:
 * The Zodiac Titans
 * Shadows of the Past
 * Lost Paradise

You can find Kamen Rider Chrome's other works, including the various sidestories from the ZKD Trilogy, here.