Hidamari no Heya de Kimi wo Matsu

In a world where humans and beastmen coexist, Mashiro, a college student, decides to take care of Kazuki, a beastman who has had no relatives, for a while... The two actually met once before. Kazuki was looking forward to seeing Mashiro again, but he didn't remember Kazuki at all... *"I was the only one who looked forward to seeing you..."* (Source: Shounen Gahousha, translated)