summer0294's Favorite

It was about two childhood friends who were half animals, one was half wolf and the other half goat human hybrids from a planet similar to Earth. But because of an incident they become distant and then after a few years they are selected to go to the Earth we know to investigate more of their species. Obviously it is yaoi but I can't recall the name despite being one of my favorites. Could someone help me? ε=ε=(ε≧∇≦)ε