Shingeki no kyojin

Eren Jaeger (Haruma Miura) and his childhood friends Mikasa Ackerman (Kiko Mizuhara) and Armin Arlert (Kanata Hongo) join the Survey Corps to fight the gigantic humanoids called the Titans. After their hometown is attacked by a Colossal Titan, they are part of the scouting regiment that moves out into one of the towns of the Outer Wall. When more Titans surprise them, the Scouts fend for themselves and Eren is forced to fight back, ultimately transforming into a Titan to defeat the Colossal Titan that breached the Outer Wall, allowing the group to plant a bomb that successfully closes the hole in the wall.