Well, they all consider themselves as the mother of Mori but they haven't quite grasped the relationships of humans. I do think that Rider considers Miria like a partner or co-parent because he gifted her a flower ring, perhaps that's why he asked that.
chapter 42 i guess rider learned that parents are usually married so he made and gave miria a ring. but they're probably not actually married or anything, i don't think they really know what marriage is
I did not know I needed the wholesomeness and the warmth of the scenarios. Reading this actually makes me happy. The characters are all adorable especially Mori
The guy was left hanging but still wanted her after years later... Well, the author still wanted the guy to be with the girl with bad communication skills, so... they ended up together after one confrontation . ┑( ̄Д  ̄)┍
this. read this.