Ultra: Activate the Ultimate Fusion System at the Beginning

A handsome young man who made a living by playing brick games suddenly died at home after being overworked. But, he who was supposed to die was reborn in another world and became a piece of shit? It was originally a piece of shit, but was swallowed by the ancient ferocious beast "the three-headed giant dog". He who was supposed to die again actually took over and became the three-headed giant dog. How should he make a choice in the face of the warriors who came to attack it? 1. Run away and find a remote place to live happily with a hen. 2. Kill the warriors and keep the world under your threat forever. 3. Transform into a human being, kill your own clone, and become the hero of the world. However, he was confused when he just became a prostitute, so he chose to run away. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.