Mixture opening

I started to drew this "manga" with my brother one and a half years ago. It supposed to be maximum 60 pages, but now it is 222 pages long. According to its title, the characters are chosen from different anime, the main persons are: Ranma, Inuyasha, Kenshin, Envy, Lime and Xelloss.

The story takes place in Kyoto where Xelloss has called Inuyasha because he wants to steal the Saint Gem of the Four Souls (sorry if I am mistaken, but I don't know its English name) from him, because it is one of the elements for the ritual to revive Shabranigdo. Meanwhile, Ranma also apears in Kyoto in order to find a natural healer, who is actually Xelloss, he wants to ask him to break his curse. Envy, he... he hasn't found Edward, and as he thinks that the Gem is similar to the Philosopher's Stone, he steals it. Lime was created by Hohenheim in order to use her against Envy, but Xelloss is the one who kills Hohenheim (before the story itself starts) and awakens Lime in the Hohenheim Ltd. As Lime fells in love with the first person she looks at, Lime is starting to play with Xelloss. Xelloss tells her that in reality he is Envy, and he is in that form only because he's shy... that's how the story starts... hope you can understand it...

I forgot to say, Mixture's genre is mostly comedy... (what else?)