Open to any tips and criticism: sources:capture2text https://www.lexilogos.com/keyboard/japanese.php https://context.reverso.net/%E7%BF%BB%E8%A8%B3/ http://www.romajidesu.com/dictionary/meaning-of-%E3%82%8F%E3%81%82.html http://thejadednetwork.com/sfx/search/?keyword=%E3%82%B4%E3%83%BC%E3%83%83&submitSearch=Search+SFX&x= GIMP2
Well now, this reminds me of how in Charu's works "Roshutsu Shoujo Yuugi", the character Mishima Hikaru progressed from exhibitionism, to then getting creampied without actual penetration from a penis.
Then it escalated until she eventually got penetrated for real eventually. I feel like Fukurou may be taking a similar path as Charu. I suspect this is leading up to Nanaka having sex for real. She is clearly becoming more used to her NTR escapades as the chapters have gone by.
She is getting desensitized to cheating, and keeps looking for cheap excuses to do it. I also am suspect of her husband Nao being in on this. Let's see where Fukurou takes this.
@AtotehZ I'm wondering that myself too, she didn't seem to react any different from the usual, so until proven otherwise in the story, it is assumed that she has had sex with at least her husband. If it was her defloration, Fukurou would have made a big deal about it in the plot, but her virginity was never mentioned.