Imperial Japanese Space Force: I Travelled Back in Time to 1901 and Decided to Change History With 21st-Century Technology

In 2032, an accident at a particle accelerator causes Aoi Ashihara’s soul to time travel to Japan in 1901, where he is reborn as Aoi Takagi. He is then told by the angel Liliel that if things continue as they are, the demons will triumph in the Apocalypse, leading to the decline of civilisation. Is the time travel a coincidence? Or is it part of God’s plan? Sōryū resolves to guide Japan and save the world using 21st-century technology.