The sci-fi author who was hired to develop the plots of Godzilla and several other Toho genre flicks also wrote tie-in novellas for Godzilla and Godzilla Raids Again, both published in 1955. Now, we're getting both books bundled together in an official English language translation!
https://www.amazon.com/Godzilla-Raids-Again-Shigeru-Kayama-ebook/dp/B0BYR59YB4/ref=sr_1_2?crid=1EAV2H5GAXYZL&keywords=godzilla+shigeru+kayama&qid=1679183994&sprefix=godzilla+shigeru+kayam%2Caps%2C278&sr=8-2
Love that we're finally getting Japanese print stuff that's toku related (Godzilla artbooks, original Kamen Rider manga and the like). I hope it continues with biographies, behind the scenes and making ofs, and more artbooks!