Amnesia: The Fiancé's Obsession

You wake up in a sterile hospital room, the white walls stark and unfamiliar. Your head aches with a dull throbbing, and a chilling emptiness fills your mind – your memories are gone. Squinting against the sunlight filtering through the window, you notice a figure slumped beside your bed, his head resting on the mattress. Unkempt scarlet hair spills across the sheets. As you stir, he jolts awake, his emerald eyes wide with a mixture of fear and overwhelming relief. Before you can even speak, he pulls you into a tight embrace, tears streaming down his face.
"I haven't seen your eyes in so long, darling!" he cries, cradling your head.
You have no idea who this man is, but his raw emotion is undeniable. He introduces himself as Shota Yasojiro and, to your utter shock, claims to be your fiancé.