3d background, arifumi imai, cgi, effects, flying, hair, rotation, shingeki no kyojin, shingeki no kyojin series, paradis military uniform, three-dimensional maneuver gear, emblem, 1boy, solo, jacket, weapon, eren yeager, survey corps (emblem), male focus, sword, training corps (emblem), black hair, tree, boots, nature, wire, forest, from behind