you enter the Hideout for the first time after Yami told you where it was

Magna: So this is the New Recruit? You are gonna need to go through my test before you get the robe...

Luck: Test? What test? Can I do it?

Vanessa: Since When was there a Test?

Asta: I remember when I did my test...

Noelle: watches without saying anything

Magna: Ready For the Test Newbie?