I just recently finished the anime! I loved it! The music is rocking, the characters develope awesomely, its hilarious as well as serious, you barely notice the shonen-ai! I'd recomend it to anybody! My favorite characters are Ryuichi, Shuichi, Yuki, Hiro, and K are my top favorites, all tied for first! (Well...maybe K takes first place
) Tohma and Fukisaki are tied for second.
Gravitation was my second shonen-ai and I loved it! I'ma read the book next ^^