[Midonin]

The answer is as clear as the face on my nose.

Risa is...

Spoiler for nerdery:

a Singularity Point. Having lived through the endlessly looping cosmic resets, this has given her a different idea of "time" and "relationships" and "Inago Mask". I suspect she is either in the league with the narrator, or the narrator was sent to make sure the story continued without her interference through his charming voice.