.
.
.
After the Grand Giant Blazing Drake Wolf Tyrant Overlord was butchered and eaten, another Boss spawned, which was a large and serpentine dragon with a crown of horns and the ability to inflate its throat like a frog to throw a large number of flames that covered almost the entire floor.
The monster was named Giant Blazing Wyrm Tyrant King Overlord, this monster seemed weaker than the previous Boss, but it covered a wider range with its attacks. Imagining normal human adventurers fighting this creature would only result in my mind showing them all dying by being grilled alive.
To make things interesting, the Boss changed its pattern and attacks when its Health Points reached halfway through, its red scales would turn gold, and instead of flames, it would release cannons of pressurized thunder from its mouth, dealing catastrophic damage to the room, making it tremble continuously.
Check "The Protagonist's Sister Is Actually the Strongest"!