Synopsis

Fordecades,mysteriousdungeonshavebeenpoppingupallovertheworld.Theresourcesfoundwithinthesedungeonshavecompletelyreshapedhumansociety,turninglifeupsidedown.Inthisworld,TsukasaKisaragi,ahighschoolstudentandactivedungeonexplorer,harborsalingeringregret.Backwhenhefirstgothisexplorerlicense,hissocialanxietyheldhimbackfromforminganypartyormakingfriends.Butwhetheritwasablessingoracurse,Tsukasawasbornwithanextraordinarytalentfordungeonexploration.Hewassogoodatitthatevensolo,hecouldconqueranydungeonwithoutbreakingasweat.Hegotusedtogoingitalone,andbeforeherealizedit,hehadbecomeoneofthefewEX-rankexplorersinallofJapan—soraretheycouldbecountedononehand.Despitehisincredibleskills,Tsukasakepthistrueidentityhidden,livingalow-keylife.Butoneday,hestumbleduponsomethingthatwouldchangeeverything:dungeonstreaming.Andfromthatmoment,hisworldwouldneverbethesame.