Abunai Koi no Sousashitsu ~Eternal Happiness~

The investigation division's routine is shattered by a top-level request: escort a foreign princess arriving in Japan as her personal guard. But this princess is a handful... Meanwhile, they must crack a bizarre fraud case targeting executives of a major company. As the division pieces together the puzzle, hidden truths surface. Outside work, Sakurai Tsubasa's relationship with her boyfriend is so serious they're considering marriage, but her stubborn father refuses to give his blessing. What is the princess's true mission in Japan? And will Tsubasa peacefully win her father's approval to marry?