Because afrai did it and I'm a monkey.

20 OTPs what stungunbilly loves indubitably. Since I only get twenty spots I'm making this one all Anime & Manga. The other stuff would never fit.
This is by no means a comprehensive list. Only one pairing per unit. Seriously, this is a quick skimming, barely touches the surface of my obsessions. For example, I've left out my het OTPs.

Part One, Anime & Manga
-L/Light (Death Note)
-Mugen/Jin (Samurai Champloo)
-Ginji/Ban (GetBackers)
-Vash/Wolfwood (Trigun)
-Subaru/Seishirou (Tokyo Babylon)
-Heero/Duo (Gundam Wing)
-Youji/Aya (Weiss Kreuz)
-Utena/Anthey (Revolutionary Girl Utena)
-Klaus/Dorian (Eroica)
-Toboe/Tsume (Wolf's Rain)
-Naruto/Sasuke (Naruto)
-Tsuzuki/Tatsumi (Yami no Matsuei)
-Nakago/Tamahome (Fushigi Yuugi)
-Iason/Riki  (Ai no Kusabi)
-Marron/Carrot (Bakuretsu Hunters)
-Hakkai/Gojyo (Saiyuki)
-Ed/Roy (FMA)
-Kagetsuya/Chihaya (Earthian)
-Yuuri/Wolfram (Kyou Kara Maou)
-Train/Sven (Black Cat)

That was fun. Lists!