Loveless - S01

In the world of Loveless, people are born with cat ears and tails that vanish only after they lose their virginity. Because of this, these features have become symbols of innocence. Battles are fought exclusively by "fighting pairs" - duos where one member, the Sacrifice, absorbs damage while the other, the Fighter, launches attacks. Ritsuka Aoyagi is a 12-year-old boy struggling with unexplained amnesia. After the recent death of his brother, his life takes another turn when a stranger named Agatsuma Soubi approaches him at school, claiming to have known his late sibling. Ritsuka learns that Agatsuma and his brother were once a fighting pair, and now Agatsuma has inherited Ritsuka as his new partner. As they investigate the truth behind his brother's death and the shadowy group called the "Seven Moons," the two grow unexpectedly close, complicating their already tangled relationship.