A Case of Transmigrating as a Sick Villain

I have possessed the sickly older brother of the main character in the 19+ dark BL novel "Gray." The problem is that I am the villain who torments the main character and flirts with the main lead, only to disappear without a trace. In situations like this, the best cliché is amnesia that happens without any questions or context. "I only remember my name. Baek Jin-gyeom." But the reactions are strange. Things are unfolding differently than I expected, right? "Do you really want to find your memories?" Baek Jin-woo seems reluctant to search for his memories. "Are you no longer interested in me?" The main lead, Tak Won-beom, who should have been disgusted, is showing interest instead. ...