I've waited several chapters for the story to progress but I have to admit I'm honestly disappointed in Sei that she has yet to consider meeting up with Aira or asking how she's been faring in this alien world. Yes, they are strangers, but I'd say the two being alone in a foreign world makes them as close to each other as two humans in an apocalypse. Also, Sei is considerably older, so I'd say she should look out for the other girl or at a minimum show interest in a friendly relationship, and then if Aira is not interested then nevermind. It can also be seen that her reluctance to admit to being the saintess is simply putting Aira under the pressure of not being able to perform duties she's not meant to. I understand that from Sei's point of view, she might be trying to not make Aira lose her position in the palace seeing as she's been the one being showered with attention and care since their arrival, but I really think that she should have met up with the person and discussed what they think on the matter.