Knock, and the Door Shall Open

Meet Hiroki. He is Akihito's childhood friend and totally and completely in love with him. The only problem is that Akihito doesn't love him back. In fact, he is unaware of his feelings. So, in an attempt to convey his feelings to Akihito, Hiroki sleeps with him. The problem is, though, Akihito still doesn't notice. But, with the help of a younger man named Nowaki, Hiroki just might be able to regain the wonderful feeling of being in love.