The shirt reads: “ERROR — 404: LARP NOT FOUND,” with a RETRY button underneath.
It is drawn as a 1990s desktop dialogue box: grey window chrome, blue title bar, minimise and close buttons, a yellow warning triangle, an hourglass cursor and a mouse pointer hovering over the button.
The period detail is exact, right down to the hourglass. A 404 means the thing you looked for is not there, which lands differently when the thing is a persona. For the LARP crowd and for anyone old enough to feel something about that window.

































































































