3d background, arifumi imai, cgi, effects, flying, hair, rotation, shingeki no kyojin, shingeki no kyojin series, 1boy, paradis military uniform, male focus, solo, emblem, jacket, weapon, three-dimensional maneuver gear, sword, eren yeager, brown hair, belt, black hair, holding, teeth, clenched teeth, training corps (emblem), wire, parody