Unravel trigger

In the Frost Neutral Territory, a precarious buffer zone between two superpowers, detective Sakaki Kai searches for his missing childhood friend Yuzuriha Saina amid the city's volatile melting pot of cultures and conflicts. When a chance encounter with a young girl named Millie leads to an unexpected revelation, Kai's personal quest becomes entangled with a matter that will reshape the world's political landscape. As he unravels the mysteries of the past, he discovers that preventing future tragedy might require confronting truths both personal and global.