Loveless -yaoi

Loveless is an ongoing fantasy manga by Yun Kōga. It is currently serialized in the Japanese magazine Monthly Comic Zero Sum by Ichijinsha and collected in nine tankōbon as of November 2009. Kōga plans to end the manga at fifteen volumes.
Tokyopop licensed Loveless for an English-language release in North America. It released the series from February 7, 2006 to September 1, 2008.
A 12-episode anime television series adaptation was made by J.C.Staff, broadcast in a post-midnight slot on TV Asahi and ABC from April 2005 to June 2005. The anime series was licensed and released in the US by Media Blasters in a set of 3 DVDs in early 2006.
The most immediately noticeable aspect of the story is that many characters are kemonomimi — cat-like features (in this case, ears and tails) are universal from birth, so there are as many catboys, including the protagonist, as there are catgirls. People in the Loveless universe lose their animal features when they lose their virginity. Those who no longer have animal features are differentiated by society as "adults", illustrating an underlying theme of sexuality in society.

^Asta de mai sus, pe numele lui Ritsuka, e baiat:))).