Melancholic Rendezvous 

College student Ayumu Chiba is handsome enough to draw constant attention, but since he's a red-faced crybaby, his only friend is a cat named Ai. When his beloved Ai passes away, fellow cat-lover Haruki Konno takes him under his wing, and he develops feelings for him. However, when Haruki's nephew Hiro shows up one day, Ayumu immediately realizes Hiro has identified him as competition. Worse, he becomes victim to Hiro's bullying...! This is a cat-filled love story between an arrogant younger man and a handsome, antisocial crybaby who get turned down by the same person. (Source: Renta!) Note: Chapter count includes one extra chapter.