Eternally Regressing in Another World

One day, I attempted to save a girl who was on the verge of taking her own life, but instead, I accidentally plummeted from the rooftop of the apartment building rather than the foolish girl. As I prepared for my miserable end, I heard a voice say, "Game Start." Bewildered and without any understanding of what was occurring, I opened my eyes to behold a completely strange landscape laid out before me. I had entered a realm filled with magic, dragons, and nobles, all of which were entirely unfamiliar to me. However, the only aspect that had shifted was the world itself. I remained unchanged, just an ordinary human devoid of anything remarkable. Now, I was compelled to navigate this perilous other world where death could confront me at any moment and from any direction. Lacking magic, cheats, or special powers, the only tools at my disposal were bluffing, manipulation, and everyday items from my previous life, including my smartphone, a lighter, and ballpoint pens. There was no chance I could survive in such an environment. Unsurprisingly, I met my end almost instantly. The next moment, when I reopened my eyes, the same initial scenery lay before me yet again. This is the tale of the weakest, most mundane individual who fights by dying and restarting repeatedly, making full use of every retry.