In 2007 a light novel was published in Japan based on the movie L: Change the World, which was itself a Spin-Off of the popular Death Note franchise. It was then re-released in 2009 in some countries. The novel in itself is pretty short, with only a total of 188 pages.

It's an Alternative Continuity to both the main Death Note series and the film it was based on. The story centers around L and his last 23 days on earth and twenty-two days to save the world from a terrorist group called Blue Ship whose main goal is to purify the world by killing off most of humanity with a deadly virus.

• Alternative Continuity: An alternative continuity to an alternative continuity. Let that sink in for a moment.
• Batman Gambit: Well, it is Death Note.
• Big Brother Instinct: L to Maki. See Papa Wolf below.
• Bond Villain Stupidity: both K and Matoba
• Children Raise You
• Crowning Moment of Heartwarming/Tastes Like Diabetes: Heart warming to some. Chessy to others.
  • The moments with L and Maki are always adorable. Their big brother-little sister/father-daughter bond are just waiting to pull at your heart strings or waiting to make you throw up rainbows.
  • The part were L mentions that Light was his first friend.
• Foe Yay: See Ho Yay and Ship Tease.
• Foregone Conclusion: L will die in the very end.
• Gambit Pileup: At one time, there are at least four people with different agendas, with L, Blueship, Surega, Kujo, Maki, etc.
• Mythology Gag: There are a few references to the original work and the movie:
  • L revisits the Yellow Box Warehouse, where he meets Blue Ship for the first time.
  • Rod Ross gets a passing reference, whose name is written down by L himself. However, considering that Rod Ross isn't his real name according to the manual, a reader might actually figure out that L didn't really kill him.
  • Matsuda does the fake falling death he did in the Yotsuba Arcin a similar way, except in a gambit where he is pertending to be Surega, Surega posing as L, and with a fake Death Note.
• Papa Wolf: Played straight with L.
  • The two most memorable moments of this trope were:
  • When Maki went missing and got kidnapped, L went into full blown Papa Wolf mode and is ready to kick some Blue Ship ass.
  • L also addressed to the president that if he doesn't promise to make a better world for the children technically "he" will not hesitate to use the Death Note.
• Ship Tease: L is literally ship teased with both Light and Misa. Much to the delight of the shippers....
• Stalker with a Crush: L to Misa. His fanboy crush is pretty cute at first but then it slowly starts to get creepy.
• The Ditz: Subverted. When Kujo first meets Surega, she acts like she didn't know about the FBI. Zig-Zagged when it is revealed that Kujo is K.
• The Man Behind the Man: Kujo hijacks Mosuba's plan.
• The War On Straw: No, this is not the argument of the Green movement... Nor is this why anyone supported Kira.
• Well-Intentioned Extremist: Blue Ship's goal is to kill off most of humanity in order to save the environment. Kujo takes advantage of this.
• Xanatos Roulette: Misa accidentally writing the wrong date for Rod Ross's death and L using this to his advantage comes to mind.