[Shadowside]
Oh a hill where sometimes there is a castle, depending on whether people are paying attention to it, a hole appears in the air. It's quickly widened by a metal point, then turns into an honest-to-goodness dimensional rift as the letter opener is slid along the boundaries of the world. Through the hole comes a figure, who quickly turns to pinch the walls of the portal shut and then flips the letter opener casually, to have it vanish at the apex of it's airtime.
And she sets off walking down the hill. Got a long way to go.
The traveler is humanoid, feminine shaped, wearing a black rubbery outfit padded with protective plates, a bandoleer with several types of ammo and throwable weapon, and sunglasses, which curiously brighten the world here, causing several moments of disorientation when she first enters. Heavy yellow gauntlets that resemble a certain ludicrous weapon provide the only splash of color.