Extraterrestrial

 (Japanese: 地球外, Chikyū-gai) is a Japanese science fiction-thriller manga, being published by in Japan and  in the United States since TBD 2012.

Synopsis
Set during a time known as the Great Invasion, a small group of humans aims to protect Earth (more specifically Tokyo) from the invaders.

Main

 * Usui Masayuki (Ulrich Marshall in English) - an eager soldier who joins a group of soldiers in a mission to stop the Kurochi.
 * Kuno Eho (Camila Rhodes in English) - a sniper who is often at odds with Usui due to his immaturity, ending up later to develop feelings for him.
 * Suto Okyoito (Shay Owens in English) - a fellow soldier who is Usui's opposite, serving as his main rival, believing he should be team leader.
 * Masaki Ori (Michelle Oakley in English) - a medic who quickly befriends Usui and often tries to be sure that he doesn't get into trouble, being obvious that she has a partial TBD.
 * Blood Wolf - Usui's pet wolf who often gets along with him and is sometimes used as a mode of attack by him.

Supporting

 * General Kami Zenpan (Keith Kirkland in English) - the head of Resistance who attempts to stop the Kurochi from TBD.
 * Kukuri Miyazawa (Krystal Mitchell in English) - General Kami's second-in-command who is secretly in love with him.

Antagonists

 * Queen Ochel - the Queen of the Kurochi who plans to TBD.
 * The Savage One - Orchel's insane henchman who TBD.
 * Omegaeirian - a muscular and tough Kurochi who serves as TBD.
 * Yoshie Yusa (Yasmin Young in English) - a childhood friend and potential lover to Usui who later betrays him to the Kurochi.
 * The Sad Man - a tall and skinny man who is always crying, being prone to insane fits of rage in battle.
 * The Four Horsemen, consisting of:
 * The Sharp Dressed Man - a mysterious man who known for his TBD.
 * The Maniac - TBD
 * The Devil with the Blue Dress - TBD
 * Rasputin - a Kurochi who is known to have skilled magic powers.
 * The Red Faced Bandit - an odd cowboy-inspired man who is incredibly infamous and will work for anyone with enough money.
 * TBD (TBD in English) - a rogue member of the Resistance who becomes a radical terrorist.
 * TBD (TBD in English) - a rogue member of the Resistance who becomes a radical terrorist.

Arcs

 * 1) Invasion Begins (1-5)

Chapters

 * 1) /The Invasion/ - TBD

Animated adaption
An animated adaption of the manga is produced by, airing on since TBD 2017.

An English dub is produced by, airing on since 2018, counting with the voices of Crispin Freeman as Urlich, Ashly Burch as Camila, Matthew Mercer as Shay, Cristina Vee as Michelle and Laura Bailey as Queen Ochel.

Trivia

 * The four horsemen are named after songs.