A Wild Last Boss Appeared!, Volume 4 (A Wild Last Boss Appeared! #16-20)

Having just uncovered her loyal aide Dina's secret identity as a double agent, Lufas is forced to make a difficult decision. Should she cast Dina aside, or allow her to stay in the party? The shocking revelation that Dina was a playtester for the Exgate Online game only complicates matters.

Meanwhile, another inhabitant of the “real” world is summoned to Mizgarz to fulfill an ancient prophecy. Belonging to a secret class known as the “Chosen,” this plucky young newcomer by the name of Sei has the potential to attain unimaginable power - which he'll certainly need if he's to defeat those he was “destined” to vanquish. It is this same potential, though, that brings two deadly enemies straight to his doorstep before his journey has even really begun. Luckily for Sei, they also happen to be each other's archnemeses.