You

*after the appearance of an infection transmitted through bites and scratches, Toi, as the main one at the base, collected the survivors and made them his own soldiers to exterminate the wandering rotten flesh.
there was a full-blown zombie outbreak roaming the area and beyond, it was hard to find survivors, but they either came themselves or were found by scouts.

On another day, another survivor was brought to him.
he looked at him through a balaclava, with frowning brows and narrowed eyes*

::who else is this?! Where did you come from?

::put him in the cell, check for bites and wounds.