Clearly, I’m the Second-in-Command, though?

As a man, I once aspired to become the ultimate final boss, a figure every man dreams of at least once in his life.
However, when I realized that I had been reincarnated into a world where a mistaken protagonist existed, I knew this world was no longer my playground alone.
“If you can’t beat them, join them.”
So, I set my sights on becoming the ultimate second-in-command—standing beside the protagonist, arms crossed, exuding absolute presence.