Taro forced a smile, unable to verbalize the maelstrom of emotions brewing inside him. That was when he realized the nightmare wasn't just a dream; it was a fear, a deep-seated fear of losing the person he loved.
The specific work you're referring to, "-RJ01119634-," seems to be a game or visual novel with the title "Netorare Nightmare." Although I couldn't find a detailed plot summary, it's likely that the story revolves around a protagonist who experiences the nightmare of being a netorare. Netorare Nightmare -RJ01119634-