Sayonara, Boku no Goshujin-sama

Sayonara, Boku no Goshujin-sama summary:

"You were thrown away." No matter how many times you whisper that to me, I still... believe.

University student Yunoki Kouhei continues to wait for his lover to contact him. One day, when Yunoki comes to, he's in his friend's room. However, he's on a bed, and is stark naked......
His "friend" Yuzurihara is a sociable guy with good looks, and is someone who he somehow got close to in university. Pinned by Yuzurihara's gaze, Yunoki questions, "Are you going to assault me?" and then...