Café Kom, Kotto, seven o'clock. Agent Kom grinds a Ngang, pulls a short shot under pressure. Sharp bitterness, Cameroonian. The coffee that decides everything.

The door chimes. Courier in uniform, sealed diplomatic case, red seal of the Chinese embassy. Signature, gone without a word.

Inside the black velvet box: a chip three millimeters across, laser-etched. Kom pulls out his jeweler's loupe. His hand freezes.

The spectral pattern etched there is a variant of his own analysis signature, published in 2019, never used anywhere else.

His phone vibrates. CSATA, black channel. The People's Bank of China and three mining consortiums from Shenzhen flagging blockchain transactions with hashes impossible without military nanofab. Beijing refusing American interference. They demand a neutral African mediator. Him, specifically.

Nadia sets the Rio postcard under the counter. The third knot just changed continents.

"Nadia, this thing na my own equation, but I no fit remember when I write am for nano."

She leans in. He flips the chip over. A second etching, microscopic, in Mandarin.

The father of the equation is expected on the seventy-fourth floor.

Want to know which Shenzhen tower has seventy-four floors and is waiting for a Cameroonian? Messenger, we go up together. ☕