爱潜水的乌贼
Yet we know from canon that the restrictions on sefirots was waning. We literally so a tributary from the river of eternal darkness(or whatever it is called). This seems to take place considerably later than that and for all we know, Klein might be or has been affecting things in some manner. Problem is we won't know exactly what's going till we do. Nothing can be ruled out currently especially the trial and testing bit which from an author's perspective might be more interesting to explore than handing over the sefirot like he pretty much did to Klein in book 1.
Dolphins3:The sefirah City of Calamity should still be sealed in the Western Continent and unable to affect people. And Sefirah Castle only affected normal people as part of Celestial Worthy's resurrection scheme, so I don't think the City of Calamity would have something like trials.
Lumian may be the first person to take a potion and immediately digest it :p. He's more of a Hunter seed than even Klein. That woman sounds like Fors but also not... maybe it's because most of what I remember is her encounters with Gehrman and being frightened :p. Anyway, she's definitely given Lumian motivation to throw everything + the sink at the monster.