Spy Wars: I signed in at the Military Police at the beginning

Zhou Ke, the captain of the military police, has 1825 days left before he takes charge of Sakura. Zhou Ke uses his position to bring evil practices to the enemy, but his rank keeps rising! In this life, Zhou Ke will lead Sakura on a completely different path from his previous life! In this life, Zhou Ke, like his code name "Crossing the River Soldier", has embarked on a path of no return! ……….Zhou Ke has acquired the ability to deliver signed-in items at a specific point. Let's see how the protagonist, through his personal background and increasingly powerful sign-in ability, walks out a unique path to becoming a king in the new world (this book is a parallel world, a multiverse, so don't exaggerate!)...