Warhammer 40K! The Glorious Queen of the Hammermen

Warhammer 40k is not a suitable world to travel through, even with the Emperor's blessing.
However, if the Emperor is a friend who plays tabletop chess with you in the real universe, then the matter of traveling to the 40k universe seems to become subtle?
"I'm sorry that I hid some truths, but my friends, my world really needs your help."
——Big Brother E
"Get your Imperial-class Titan models ready! Sooner or later we'll take your entire collection away!"
——A friend of Big E