She was sent to spy on them. But something-or someone-is making her question everything. Y/N, a skilled assassin from the Port Mafia, has one job: infiltrate the Armed Detective Agency and report back with their secrets. Cold, calculating, and armed with a deadly ability known as Thanatos' Kiss, failure isn't an option. But nothing goes according to plan-especially when Dazai starts paying a little too much attention to her. As cracks begin to form in her perfect disguise, Y/N finds herself torn between the mission she was raised to complete... and a truth she was never meant to feel. Not everyone is who they seem. And neither is she. New chapter every Saturday✨