My first day at the Criminal Investigation Bureau started with an ill-fitting suit and a knot in my stomach that had nothing to do with my questionable breakfast choice. My name is Kan, and fresh out of the academy, I was eager to prove my worth. I had dreams of solving the city's darkest crimes, maybe even becoming a legend in my own right. Little did I know, my career was about to kick off with a case that would make my skin crawl and my sides ache with laughter—simultaneously.

I walked into the bustling precinct, the hum of ringing phones and hurried conversations creating a symphony of chaos. My superior, a grizzled detective with a permanent scowl, greeted me with a grunt and a thick case file. "Welcome to the big leagues, Kan," he said, thrusting the folder into my hands. "Hope you like puzzles."

Inside the folder was a single photograph: a gruesome scene that looked like it was ripped from a twisted board game. The victim was posed in an eerie, almost playful manner, with pieces of a jigsaw puzzle arranged around them. "We're calling it the Jigsaw Case," the detective explained. "And now, it's your problem."

I barely had time to register the horror of the scene before another officer, a lanky guy with a penchant for bad jokes, leaned over my shoulder. "Looks like the killer's got a piece of your first day," he quipped. I groaned inwardly; if this was the tone of my new workplace, I was in for a long ride.

As I delved into the details of the case, I couldn't shake the feeling that the killer was toying with us. Each piece of the puzzle seemed to lead to another twisted joke, another grotesque setup. But there was something more—a pattern, a hidden message that I was determined to uncover.

The deeper I got, the stranger it became. It was as if the killer was daring us to solve his macabre game, taunting us with every move. Between the dark humor of my colleagues and the chilling clues left by the murderer, I found myself in a bizarre dance of dread and laughter.

I realized that in this line of work, sanity was as fragile as the puzzle pieces scattered across the crime scenes. But I was ready to put the pieces together, one way or another. After all, this was my first day. And if I could survive this, I could survive anything.