The Physicist's Alchemy System

One moment, Rosen was a top physics student celebrating an epic boss kill in his favorite game. The next, he was shrunken to a child, transmigrated into a blood-drenched medieval manor, his new noble family slaughtered. The monster responsible? The exact high-level vampire BOSS he'd just defeated, now very real and very hungry. Trapped, terrified, his only hope ignites: his game's \"Alchemy Road\" talent tree. This isn't just fantasy alchemy; it's the raw power of Earth's science – chemistry, physics, and material science – weaponized. He can literally see and manipulate molecules. With the vampire's eyes fixed on him, Rosen must act. His plan? Turn his own body into a lethal trap. Will this sudden, incredible power be enough to survive the ultimate predator, or will the \"last alchemist\" be the first to fall?