This is electrifying. I've never felt so thoroughly consumed by a hentai game, nor can I remember the last time I read a VN where the story and pacing left me this breathless and yearning for more.
I love that the relationship between Ayumi and MC is actually a caring one, bridging the gap between the crazy-hot teasing and the sense of realness and commitment of their bond. The story manages to be beautiful and sexy (not only visually, but narratively) by giving itself space for pairing the intoxicating fantasies with the strength of the couple as realistic characters.
This so far seems the right fit for those looking for resonance on both levels: the thrilling fantasy of the forbidden, and the sense of depth and safety of an authentic relationship - a balance which I have sadly not seen in any work in any medium, at least nowhere near as well pulled-off as this.
To my mind this is the unique strength of this VN, and I really hope to see it staying true to that dynamic - Blurring the walls rather than smashing them up altogether.
Whatever way the comments and Discord might go, I would simply wish for you to trust your vision to the end, especially if it will be in keeping with the incredible bait-and-switches of mind-blowing teasing and (in the end) relative wholesomeness we got to see thus far, or as others have pointed out, that there should be at least one such ending.
PS: Delightful timing with that salmon dish! I see what you did there. :P