Edge of Tomorrow is one of the most unique science-fiction films in the modern era, earning its title as one of the best in its genre. Directed by Doug Liman and starring Tom Cruise, it nailed the time loop concept and was filled with exhilarating action that captivated its audience.

What’s less known about the film, however, is that it’s actually loosely based on All You Need Is Kill, a Japanese light novel written by Hiroshi Sakurazaka. Its protagonist, Keiji Kiriya, inspired the creation of William Cage, the protagonist of Edge of Tomorrow.

Tom Cruise as Willam Cage in Edge of Tomorrow. [Credit: Warner Bros. Pictures]

All You Need Is Kill was published in 2004 with a gripping science-fiction narrative set in a world where humanity is locked in a constant battle against an alien race known as the Mimics. As portrayed in Edge of Tomorrow, Keiji Kiriya also relives...