There was a rank W a few chapters ago, so it's pretty safe to say it's ranked from A to Z. If we think of it that way rank E is actually very high up in the scale. Btw the level 5 is now a level 30, but your point still stands.
But yeah I do agree that the level 70k is weirdly fighting on the...
Next chapter prediction: Kino is gonna break free and draw blood herself to feed whatever it is and summon it, then goes on about how rare and precious the summon and kills to eat and share with everyone.
From page 8, I guess the game glitched too hard and made the dialogue sprite of raspi into the world, so it can't be damaged since there's no stats to a dialogue sprite, and I guess it also works the other way where raspi can't damage them either
Theory on how it can end differently if they still want Yumelia to get stabbed: Alicia sees dark magic users as black mists, so maybe in the fight she couldn't tell who's who and stabbed a random one in an emergency situation, which ends up being Yumelia.
Not forever, they did say Anverse is a good game, so there's probably a kill zone when u fall out of bounds where it deletes everything after a certain point to prevent memory leak