I've decided to start this thread to give a little space to the most underappreciated Clamps couples around. Clamp has been responsible for so many great characters and couples, it'd be a shame to not give them a little attention. Post couples of any gender combination, as long as the couple is at least somewhat canon or they could become canon. Beware spoilers aplenty.
Starting off...
Gingetsu/Ran from
Clover- Such a sweet couple, with such an angsty story. I wish they would be able to spend more time together. (Actually, I read a fantastic fanfic where they were reincarnations of Seishirou and Subaru:
http://www.fanfiction.net/s/2566485/1/) They're one of the more popular couples from Clover, but Clover isn't the most popular of Clamp's series, so they count. Fanlisting:
http://fan.howlingmoon.net/gxr/Saya/Touru from
X- A slightly disturbing (well, maybe more than slightly disturbing... this is X, after all) but beautiful relationship. They don't have a fanlisting, sadly. They were separated by destiny and their own choices. I always thought it was so sad that they probably never had a chance to make love.
Tomoaki/Kizu from
Suki, Dakara Suki- A porn/children's writer and his bodyguard as lovers. Only Clamp could come up with these two. Unfortunately there's so little fanfiction on them; there's not even a fanlisting for them.
Takeshi/Kentarou from all three Clamp Academy series- These two have been best friends for years, and work well together, attending school together at Clamp Academy. However, Kentarou's dream, much to Takeshi's embarrassment, is to become Takeshi's bride and wife. And Kentarou (aka Ken-pi) lets everyone, from their classmates in high school to Student Council President of the Elementary Division Nokoru Imonoyama, know about his undying love for his Take-pon. 'Take-pon' does not take to this very well, unfortunately. But you know that Take-pon really does love his Ken-pi, and they'll get together one of these days. They seem like a combination of Sorata/Arashi and Kuro/Fai. Unfortunately they don't have a fanlisting either, though there is more fanfiction for them that for Saya/Touru and Tomoaki/Kizu. They make a cameo in Tsubasa. Here's the fanlisting for their main series, Clamp Academy Defenders Duklyon:
http://duklyon.ore-sama.ca/Now, add your own underappreciated couples!