User blog comment:KasuraS/Aldebaran and Ram/Rem's Past Theory/@comment-34790293-20180326101852

Let me try with Re: zero knowledge...

1. Rem/Ram couldn't have cut off Al's arm cause he lost it in Volachia and Oni village 'surprisingly' isn't located in Volachia

2. I don't think you'd go and say "Hey there Ram" to someone (or their sister) you presumably killed, don't you think??

3. He was fine when he thought Rem was Ram, but when he found out that Rem was Rem he questioned if Ram was alive, possibly due to him trying to recall his memories, after confirming that she's alive, he got mad (kinda), he says (IIRC) "That thing's still alive?!" he didn't specify what that 'thing' is, and judging by his attitude when he thought Rem = Ram, I think he was talking about Rem, not Ram... cause, if Ram was the 'thing', then he'd already have snapped when he saw Rem...

4. Rem goes oni mode? I doubt she'd be able to do anything, the village chief was unable to defend himself against them, what do you expect lil loli Rem to do? She's not the Oni prodigy like Ram, she's just a normal one horned Oni, even less capable than a normal two horned, and she was 8 years old to add to that

5. Roswaal was the one who saved them in the last second, so Al couldn't possibly have survived that.

6. Al = Archbishop of Pride. He does have some sort of ability that isn't magic nor a blessing, and he was acquainted with an Archbishop before, probably the past Pride... though if he was the Archbishop of Pride, Rem would have noticed at least a little bit of miasma from him if he was an archbishop... but I still believe there might be a way around that... make it happen Tappei-sensei!