@penmerch@Kromer__@gogoton65 It’s an out of the way area in the Third Sanctuary. When in the room where you get bombarded with overworld projectiles, you can see another path you can walk over to.
It leads to a water way which includes the Angel prophecy, the Asgore prophecy, and a way back to the egg room.
@Adamgotsussed@Acceletor4882 I think Tsuna is going strictly off Ritsuka’s clothing (which is a lot more modern and futuristic than anything in this era).
Since they wear different clothing and they’re in the middle of a Holy Grail War, “Foreign” just means that he thinks we’re a Servant.