There's a soft noise under his breath, the most humorless chuckle. "How terribly inauspicious."

As ironies go, it's the worst. At least, birth dates are not usually celebrated after one's coming of age, in Cao Pi's reckoning, so maybe it's merely irony and not a massive kick in the face after all. He turns slowly again, facing Rosinante directly. "Brother against brother is a tale as old as time, though. You would not be the first nor the last to have to deal with it."