Mainly the relationship between Tohka and Shido.
It's pretty obvious Tohka is serious in all this, but what's the deal exactly with Shido.
Obviously, he deeply cares about her but would it actually turn out to be a couple onward.
Since i haven't read any of the novels i wonder if such a thing was already written or confirmed.
Side question bonus: Is the novel series still producing? or has it already ended novel wise.
Sorry if this is not in the right section