Unconventional Isekai: Isn't It Too Much of a Black-Company Treatment to Fight Hordes of Monsters Without Magic?

A corporate drone from a "black company" is reincarnated into another world where magic and psychic powers don't exist, but the harder you train, the stronger you get?!

Far from your typical ideal, this is a grounded, no-nonsense isekai fantasy!

(Source: Cycomi, edited)