Its more so the works all happen in the same universe. His other work The Teen Web Novelist is a Girl Magnet: Now My Crush Feels Bad for Rejecting Me! is actually also related to this one as the label that publishes the MC of that work is the same label Okaya used to work for.
Man for real, I don't like her. Like his work is necessary to help her and her sister, yet she is being selfish.
Also, I guess this is just a typical harem because Rushia is somehow still tolerating her.
Given her feelings, I would expect her to get mad and more threatening for allowing their work discussion to be interrupted.
I think it's most like "I stalk him but I love him that much so I draw the line" situation. But I don't know, the only thing I know is that she best girl.
Oh, I see where this is going. The mother of the Ina girls' gonna draw the ire of Rushia and/or Rushia is gonna wanna live with her oshi, since the Ina twins get to do so as well.