Will Generative AI Change 'Historical IFs'? Masahiko Shimada's Full-Length Novel 'All of IF', a Grand Adventure at the Intersection of Literature and Politics, Released on Wednesday, April 22!
Shinchosha released Masahiko Shimada's new novel 'All of IF' on April 22, 2026. It is an alternate history entertainment work exploring historical 'what-ifs' using a generative AI historical simulator.
📋 Article Processing Timeline
- 📰 Published: April 22, 2026 at 20:00
- 🔍 Collected: April 23, 2026 at 00:02 (4h 2m after Published)
- 🤖 AI Analyzed: April 23, 2026 at 01:50 (1h 48m after Collected)
Utilizing a 'time machine' powered by groundbreaking generative AI, ascertain the truths and falsehoods behind aircraft crash accidents, the US-Japan Security Treaty, and the attack on Pearl Harbor, and furthermore, prophesy the future of Japan that will arrive twenty years later!
Masahiko Shimada's new full-length novel "All of IF" (published by Shinchosha) has reached its release day today, Wednesday, April 22.
"Japan is a testing ground to prevent the entire human race from leading to ruin."
(Excerpt from the text)
Kaoru Hanamura is the director of the "Alternate History Research Institute". Utilizing a historical simulator booted up by the state-of-the-art generative AI "Chaos Generator", he enters the world of "IFs" that could have existed in history—the "meta-reality". What is the world that emerges as a result of not attacking Pearl Harbor? What if Japan had achieved independence from America? What is the society that appears after the full scope of historical conspiracies is exposed? Can Hanamura survive the "meta-reality" where everyone from ruined nation power-holders to rebels, from the CIA to people from the future, run rampant? Following the talked-about works "Panem et Circenses" and "The Great Reincarnation Era", the imagination of a turbulent era rises explosively! The birth of a super-realistic & thrilling full-length novel.
■ Book Content Introduction
Making full use of the groundbreaking generative AI technology, the Chaos Generator, Kaoru Hanamura transcends space and time. What is the astonishing truth revealed from the darkness of aircraft crashes, the US-Japan Security Treaty, and the attack on Pearl Harbor? Can Hanamura survive the "meta-reality" rampant with ruined power-holders, rebels, the CIA, and people from the future? A highly ambitious entertainment work showcasing the Shimada world at full throttle!
■ Author Profile
Masahiko Shimada
Born on March 13, 1961, in Tokyo. Graduated from the Russian Department, Faculty of Foreign Studies, Tokyo University of Foreign Studies. Professor at the Faculty of Intercultural Communication, Hosei University. In 1983, while still in university, he gained attention by publishing "Divertimento for a Gentle Leftist". Major authored works include "Music for the Kingdom of Somnambulism" (Noma Literary New Face Prize), "Master Higan" (Izumi Kyoka Prize for Literature), "Degenerate Sisters" (Ito Sei Literature Prize), "Daughter of Chaos: Shaman Detective Naruko" (Minister of Education Award for Fine Arts), "The Star of Void Humans" (Mainichi Publishing Culture Award), "When You Were a Heretic" (Yomiuri Prize for Literature), "Novel Writing ABC", "Snowdrop", "Panem et Circenses", "Sometimes, I Become an Affectionate Father.", and "The Great Reincarnation Era". He has authored numerous plays, opera librettos, manga scripts, poetry collections, essays, and dialogue collections.
■ Book Data
[Title] All of IF
[Author] Masahiko Shimada
[Release Date] Wednesday, April 22, 2026
[Format] 46 size hardcover
[Price] 2,310 yen (tax included)
[ISBN] 978-4-10-362211-6
[URL] https://www.shinchosha.co.jp/book/362211/
Masahiko Shimada's new full-length novel "All of IF" (published by Shinchosha) has reached its release day today, Wednesday, April 22.
"Japan is a testing ground to prevent the entire human race from leading to ruin."
(Excerpt from the text)
Kaoru Hanamura is the director of the "Alternate History Research Institute". Utilizing a historical simulator booted up by the state-of-the-art generative AI "Chaos Generator", he enters the world of "IFs" that could have existed in history—the "meta-reality". What is the world that emerges as a result of not attacking Pearl Harbor? What if Japan had achieved independence from America? What is the society that appears after the full scope of historical conspiracies is exposed? Can Hanamura survive the "meta-reality" where everyone from ruined nation power-holders to rebels, from the CIA to people from the future, run rampant? Following the talked-about works "Panem et Circenses" and "The Great Reincarnation Era", the imagination of a turbulent era rises explosively! The birth of a super-realistic & thrilling full-length novel.
■ Book Content Introduction
Making full use of the groundbreaking generative AI technology, the Chaos Generator, Kaoru Hanamura transcends space and time. What is the astonishing truth revealed from the darkness of aircraft crashes, the US-Japan Security Treaty, and the attack on Pearl Harbor? Can Hanamura survive the "meta-reality" rampant with ruined power-holders, rebels, the CIA, and people from the future? A highly ambitious entertainment work showcasing the Shimada world at full throttle!
■ Author Profile
Masahiko Shimada
Born on March 13, 1961, in Tokyo. Graduated from the Russian Department, Faculty of Foreign Studies, Tokyo University of Foreign Studies. Professor at the Faculty of Intercultural Communication, Hosei University. In 1983, while still in university, he gained attention by publishing "Divertimento for a Gentle Leftist". Major authored works include "Music for the Kingdom of Somnambulism" (Noma Literary New Face Prize), "Master Higan" (Izumi Kyoka Prize for Literature), "Degenerate Sisters" (Ito Sei Literature Prize), "Daughter of Chaos: Shaman Detective Naruko" (Minister of Education Award for Fine Arts), "The Star of Void Humans" (Mainichi Publishing Culture Award), "When You Were a Heretic" (Yomiuri Prize for Literature), "Novel Writing ABC", "Snowdrop", "Panem et Circenses", "Sometimes, I Become an Affectionate Father.", and "The Great Reincarnation Era". He has authored numerous plays, opera librettos, manga scripts, poetry collections, essays, and dialogue collections.
■ Book Data
[Title] All of IF
[Author] Masahiko Shimada
[Release Date] Wednesday, April 22, 2026
[Format] 46 size hardcover
[Price] 2,310 yen (tax included)
[ISBN] 978-4-10-362211-6
[URL] https://www.shinchosha.co.jp/book/362211/