
How is he slow? A lifetime of indoctrination, brainwashing/literal chains around his soul, and yet he never harmed Leticia without being explicitly ordered to (and shared healing potions when she was injured, which went against orders).
He might not be Leticia's Wing YET, but he's already on her side (if only because of Noelle).

Oh! Oh! Yes that makes sense! I almost forgot:
Leticia's memories of him in her past life were mostly those of indifference. While he didn't actively try to hurt her, he did mostly tend to ignore what the other wings did to her.
I don't usually forget the things that happened to a FL in their previous lifetimes but this time I did. I'm not the biggest fan of Ahuin but his actions towards Leticia aren't as evil as some other side characters in other stories have been to those respective FLs in their own past lives so maybe that's why?
Ahuin is a bit slow but he seems to be coming around