This is my massive, rambling, open-ended story based on the question "What if all (or most) of my favorite high school anime characters were in the same school?" I started with Ranma 1/2, but along the way the story has developed a strong Devil Hunter Yohko flavor as well, coupled with with many many, odd twists, and characters from Tenchi Muyou, Inu-Yasha, Ursei Yatsura, Project A-Ko, El Hazard, Magic Knights Rayearth, Magical Project S, Card Captor Sakura, Fushigi Yugi, Here is Greenwood, Escaflowne, Birdy the Mighty, 3x3 Eyes, Ah! My Goddess, Kimagure Orange Road, We Are Mint, All Purpose Cultural Cat Girl Nuku Nuku, Revolutionary Girl Utena, Sailor Moon, Zenki, and Ushio & Tora.
Have I forgotten anyone? I have also been transplanting characters from series not set in the present time, as needed -- Daisuke Ido from Gunmm/Battle Angel Alita, Gendo Ikari from Evangelion, Lain, Kohran Li from Sakura Taisen, Key from Key the Metal Idol, etc., although sometimes it's hard to decide exactly what constitutes "present time". I have generally avoided pulling characters from fantasy series like Slayers, and there are some anime/manga shows that are specifically referred to as anime/manga shows, ie something the characters in my story can read or watch on tv. Silent Mobius is one, Kiki's Delivery Service is another. Hopefully that's not too confusing! ^_^:
Anyway, massive multi-crossovers like this can be very confusing and are usually very difficult to do successfully. Mine is typically riddled with mistakes and inaccuracies, but hopefully it's fun to read. And yes, I am still working on it! Really! I've been updating the character guide as well.