The Other World's Books Depend on the Bean Counter #1

This first volume of the isekai fantasy series follows an overworked accountant who gets transported to a fantasy realm where his number-crunching skills prove unexpectedly valuable. The story adapts the original light novel by Yatsuki Wakatsu into manga form, with art by Kazuki Irodori. It collects the opening chapters of the series, setting up the protagonist's struggle to apply his bean-counting expertise to a world of magic and adventure.