This is quite early in the story, much before the show, and deals with younger Sergio and Andres coming to terms with their not quite brotherly feelings.

The Professor is worried about Berlin's ability to respect the rules when he'll be in charge of the operations. He has some disturbing intel about how Berlin treats hostages, and humans. He wants to know if it is true. He hears much more than he cares to, and pays for his curiosity. I don't know whether this is smut or character study. Seriously. SECOND CHAPTER UP!

Berlin isn't certain the Professor can handle the whole getting close to a woman thing. He also wants to punish him for even thinking this up. He hires a prostitute for practice and it goes very, very wrong. Obviously. This takes place BEFORE the show, but is heavy on spoilers. I haven't written something as intense for years, comments welcome!

Raquel, l'inspectrice en charge du dossier Casa de Papel, se débat entre son amour pour le Professeur et ce qu'elle pense être sa haine pour Berlin. Spoilers pour les deux saisons.

The Professor (El Profesor) and Berlin, the night before their life is going to change forever. Dark, dubious, immoral - Berlin is his own warning.