Reiko is setting all that up, yes, but she's not following NTR archetypes. At least if we're talking about the characters. They aren't based on NTR archetypes. You could argue the "story" that Reiko is setting up follows the usual NTR plotline, and sure that seems to be the case. But the characters she's choosing look like a bunch of pretty boys (and a pretty girl) than a group of NTR characters.
Funny thing is, the prologue with Reiko as a male is more inline with actual NTR archetypes. Reiko male version totally has the NTR vibe. But he's not part of the story anymore. And Reiko's efforts to set up the NTR of her dreams look more like she's unwittingly building a harem.
