灰塔笔记/Memoirs From the Grey Tower
by 空灯流远 Kongdeng Liuyuan
The original novel can be found on JJWXC. Here's a guide on how to use the site: JJWXC guide.
Genre: Historical
Content Warnings: Sexual assault, violence, non-consensual drug abuse, conversion therapy. The novel is set in the backdrop of WW2. This list of warnings is not exhaustive; please read at your own discretion.
Length: 43 chapters + 2 extras
Summary:
Mathematics is the domain of geniuses. Only freaks who find no further satisfaction in it dare to venture into the realm of cryptography.
Some claim it was cryptographers who secured victory in the Second World War. Eccentrics among geniuses, they intercepted and deciphered enemy communications, grasping the fragile throat of the Nazi war machine. They toiled in obscurity, hidden from public view, serving under Britain’s MI6—specifically, the Government Code and Cypher School.
Pursuing a romantic interest is one thing, Alan Caster, but following someone all the way to MI6’s Government Code and Cypher School? That’s hardly a wise move. And setting your sights on the supreme head of British intelligence, Garcia? That’s even worse. Winning him over, only to discard him afterward? That's the worst thing you could've done.
Oh, and to prevent any confusion about pairing: the protagonist of this story, Alan Caster, is the bottom.