What is a fanlisting? (taken from thefanlistings.org)
A fanlisting is simply an online listing of fans of a subject, such as a TV show, actor, or musician, that is created by an individual and open for fans from around the world to join. There are no costs, and the only requirements to join a fanlisting are your name and country. Fanlistings do not have to be large sites (although some are) - they are just a place where you can have your name listed along with other fans of the same subject. TheFanlistings.org is the original (but not official) web directory for fanlistings, dedicated to uniting the fans.

Aki and Ueno are the main characters in one of the stories from Sensitive Pornograph by Ashika Sakura. Ueno is a pet sitter called to take care of a 'bunny' named Aki, but when he arrives at the apartment he finds a very human Aki tied and bound in the closet. Turns out Ueno is the victim of a game initiated by Aki's Master; a man Aki is apparently in love with and would do anything for (even sleeping with strangers for his amusement). After Ueno unties Aki and some confusion about the 'bunny', Aki realizes Ueno has no idea what's going on, but still goes ahead with whatever plan his master had and he and Ueno have sex. Afterwards Aki decides to leave his master. The next day Ueno is still thinking about what happened when a beat up Aki meets up with him (they coincidentally attend the same university) and asks Ueno to invite him to lunch.
The story itself is straightforward and rather PWP, but very fun nonetheless. At the end of the manga the author makes a little side-note that Ueno later bought a real bunny that he names Aki-chan and that the real Aki still hangs around with him XD
Aki and Ueno appear on the fifth story of the manga, titled: 'Trophies belong in the Bedroom', and on the second episode of the OVA.