The ending illustration for Shingeki no Kyojin Season 4 Episode 16 (Also episode 75 total and the end of the first cour), featuring Pieck and Gabi drawn by animation director Kishi Kaori!
All season 4 ending illustrations can be seen here.
See Also: SnK Season 1 End Cards||SnK Season 2 Post-Episode Illustrations||SnK Season 3 Post-Episode Illustrations
Related News:MAPPA||Photos: Official Art||Season 4||Staff