My Killer Girlfriend Is a Little Cold

The heroine was a test subject and had to escape after an explosion at an Italian test station. There is nowhere to go but to join the Killers. Code name Nine Tails. The male protagonist is his employer and falls in love with the female protagonist at first sight. Give everything for the heroine. Note: This is a story that finally brings the killer back QWQ This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.