Synopsis
In the world of Loveless, every person is born with cat ears and a tail, which vanish only if that individual engages in sexual intercourse. As a result, these features have become symbols of virginity and innocence. Combat is exclusively conducted by "fighting pairs" or couples, consisting of a Sacrifice, who absorbs damage, and a Fighter, who launches attacks. Ritsuka Aoyagi is a 12-year-old boy suffering from amnesia for reasons unknown. His brother was recently killed, and as if his life hasn't been difficult enough, on his first day at a new school, he is approached by a stranger named Agatsuma Soubi, who claims to have known his deceased brother. Ritsuka learns that Agatsuma and his brother were once a fighting pair, and that Agatsuma has now inherited Ritsuka in his brother's absence. Together, they seek the truth behind his brother's death and the organization called the "Seven Moons," which may be responsible. Meanwhile, Ritsuka and Agatsuma seem to be growing closer than they ever intended.
Background
The Loveless anime covers the first four volumes of the manga.