Well assuming Tamagawa is the porn star (It would be crazy if she wasn’t), my foreshadowing sense is telling me page 20 will be foreshadowing how she probably never experienced love when she was a pornstar. Probably had experienced a lot of fun and ecstasy but never experienced the deeper feeling of love. Which led to her craving that deeper feeling of connection so she quit the porn biz and applied for the convenience store job to gain some form of normalcy as a starting point.