Red and Black by @ambiguously.ao3
Obi-Wan set foot aboard the Death Star knowing he was about to die. No one was more surprised than he to find out he was wrong. Obi-Wan makes it back to Yavin and trains Luke and Leia. Leia's not too keen on this Jedi business, but she'll do whatever it takes to win. This worries both her and Obi-Wan.