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.
Tamaki and Hiyori are introduced on the third volume of 'Our Kingdom' as Akira and Rei's classmates and they share a love/hate relationship with Tamaki constantly teasing Hiyori and Hiyori constantly freaking out about it.
Tamaki and Hiyori's parents were close friends so the both of them played a lot as children. The only problem is that for that entire time Hiyori believed Tamaki was a girl, and when he had to move to Germany they made a promise to not forget each other and exchanged 525 letters in nine years.