Mazumeshi Elf to Yuboku gurashi - Vol. 3 Ch. 15.5 - Memory 1: The Duty Bearer

[MangaRockRefugee]

Oldest granny in all of elvendom is young enough to have apeman blood and at the same time not know the codebreaker personally
Meanwhile Earthside only seventy something years passed

Which means that there's some serious time dilation shit happening
Buuut the Mountain Ma was pals with Chinese girl born when China put itself back together for the first time.
HOW OLD IS SHE

 

[Nk9bjP4A]

It's it a trilogy edition?

 

[kgbisafterme]

Of all the books... 😂

 

[ar513]

I guess this really implies he died in the first chapter including the scottish girl since you know what they do to witches

 

[Seraphus]

Since we are pulling beings from more than one potential earth, this works out really well.

LoTR was written before and after WWII, but published in 1954 (10 years-ish after Iyo-san's isekai).

"The Hobbit" was published in 1937, but really hit popularity after 1960, along with (and, in part, due to) "The Lord of the Rings."
(In fact, they were so popular that people would tag subway cars in NYC, Chicago, and around the world with the words "Frodo Lives." Otaku will never be held down!)

So, while this Japanese soldier may not read English, the entire series was available in Japanese by 1955-ish... and this no-nonsense soldier would have enough time to overcome some of his... less savory traits (IJA soldiers in 1930-45 were.... really, really terrible; ask Korea, some time).

Anyway.

This all seems to track really well!
(Aside from the lack of snow on a mountain in winter; WTF)