I Sell Bottled Water for Gold in Another World!

AlexCarter,atypicalcollegegraduate,isshockedtodiscoverthathissecurityguarduniformhastheabilitytotransporthimtothepast—apastthatisdevastatedbyfamine,wherefoodandwaterarehighlyvaluedcommodities.Asinglebottleofmineralwaterfromtoday'sworldcanbetradedforgold.Twocansofinstantmealpacksfromtoday'sworldcanbuyhimoneoiran'sfavor.Movingbetweenthetwoworld,Alexexchangesmundanesuppliesforwealth,accumulatingrichesandpowerinsmallincrements.Thesedays,becomingtherichestpersonintheworldinayear'stime—well,thatisnotsuchanask,isit?Backintheolddays,consolidatingthewholeempireintwoyears—completelynormal,isn'tit?