I only seen the OVA anime version of Gravitation. I have read the novels that Tokyopop published. Gravitation is the most popular shonen-ai( Boys' Love) ever in Japan and in the good old USA!! My favorite character is Shuichi because he's soooooo darn cute! He wears so many costumes, especially the girls sailor fuku (school uniform). Alot of us female otakus get our fanservice from that anime. If you have never seen the anime go to the english website at: gravitation.rightstuf.com or search for the word "gravitation".