Attack on Titan: Levi's Regrets (fan-fiction comic)

ATTENTION: the characters are not mine credit goes to Hajime Isayama (the creator of the attack on Titan series/manga). This story takes place after the 57th expedition. It focuses on Levi's regrets towards his squad's death especially Petra's, and how it surfaces memories of what Levi wants to drown. As Levi tries to move forward there comes a shocking event that gives Levi the second chance he dreamed for. (As you can tell this is a 'Levi x Petra' fan-fiction). Warning: if you read the manga, try to forget most of the events that happened after the 3rd season in the anime series which takes place in the anime more than the manga and that this comic will travel down a slightly different path. What can I say it's a fanfic. Also check out the novel version if you're interested for more depth.