Whoa, they really do have diesel trains too!? (From the setting, I would expect this being a steam locomotive)
Yep! Or at least, some kinda diesel equivalent fuel in their world. My loose guideline is that if our world had it in the 1920s, Keol can have it too (exceptions exist, of course).
Until this point, I had the notion that this world was at the level of Japan's Warring States Period.
There is a huge tech level discrepancy across different regions of Keol (which is loosely based on real life past Korea), for sure! Areas surrounding the capital have more advanced tech. Some of the bigger cities away from the greater capital area may have it, as well.
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