North x Northwest - Chapter 23

... irst code arrived. But the code system isnt the only famous thing known about the Admiral, there are so many more shocking stories about him.

When I was a lieutenant, I stayed up for ten days trying to decrypt his code before setting sail. Even if it took us days, we were still proud of cracking that geeks code. However, the last line was, If its not solved by June 10, destroy this letter. By then, June 20 had already passed, so naturally, I threw it away.

A second letter came. T ...