Shingeki no Kyojin Gaiden – Kuinaki Sentaku

Baka description:

A spin-off shoujo manga that focuses on Corporal Levi’s past.
Translations:
chapter 4 English by MagicalRoses new
chapter 4 Dutch by MagicalRoses new
chapter 4 Polish by Dorzech

Japanese raws:

chapter 8 here new
chapter 7 here
chapter 6 here
chapter 5 here
chapter 4 here
chapter 3 here
chapter 2 here
chapter 1 here
chapter 0 here

Other names:

進撃の巨人 外伝 悔いなき選択
Attack on Titan: No Regrets
Birth of Levi
Shingeki no Kyojin – The Birth of Levi