Gai Tsutsugami

Gai Tsutsugami is a major character in the 2011 anime Guilty Crown. Gai is the leader of a resistance organization known as the Undertakers, a group fighting to liberate Japan from GHQ, a military organization that took control of Japan after the country was devastated by the mysterious Apocalypse Virus. Gai meets Shu Ouma, the main character of the anime after Shu is sent by a girl named Inori Yuzuriha to deliver a package to him. On the way, Shu comes in contact with the package and gains a mysterious power to pull weapons and other objects out a person's body. The object pulled out varies depending on the person. Gai allows Shu to join the Undertakers after he destroys a couple of GHQ mechs. Gai accompanies Shu into the control center of a GHQ laser satellite, destroying the weapon, and while he is at it, destroying a mech using only a grappling hook and his Luger, destroying the machine by shooting it in a weak point on top of the vehicle. Later, Gai and Shu attack the central base of GHQ itself, in Odaiba, Tokyo. In there, they discover a number GHQ scientists are attempting to control the Apocalypse Virus, using a girl who was also Shu's long lost sister, Mana.

Gai and Mana are apparently killed, with only Shu escaping. Gai, however, is not dead. Instead, he returns with the support of GHQ and steals Ouma's powers by cutting off the arm that came contact with the package. Shu discovers that Gai is part of Da'at, an ancient conspiracy to use the Apocalypse Virus to bring about the evolution of the human race. Shu and Gai fight each other a final time in the GHQ headquarters, wher Gai and Mana, who Inori Yuzuriha is actually a second personality of, intend to transmit the Apocalypse virus to the entire world and become the "Adam and Eve" of a new human race. The fight results Gai and Mana's death. Shortly afterwards, through some process even I did not quite understand, Inori somehow separates from Mana and sacrifices herself, curing the Apocalypse virus. Yeah... It was one of those endings...