The soldiers in AoT have a piece of gear that projects a pair of cables, which they use to get around quickly by latching onto buildings, trees, etc. It's pretty sweet, very rushy, fast paced and violent anime.
he's using 3-D Maneuver Gear to fly. It's basically a system of wires that can be operated with mechanisms on the twin blades used to attach hooks onto trees or other structures where they can land on. It's pretty much the most complicated yet cool-looking grapple hook system ever.