Even as a big Mira fan, i just cant really like this one. To me, it just doesnt feel as simple or as polished as most of her other work. The rape (and that is what it was) just feels so out of place and the utter lack of any sort of consequences for Honoka leave a bad taste.
In all of Mira's works that i've read (which is at least the vast majority bar maybe a very, very small few but possibly all of them) there's always, at least to my remembrance, been at least some level of actual consent (no matter how minimal) which feels missing in this one. It's basically 'Saki got blackmailed into being raped then began to enjoy the rape'.
This doujin feels like an experiment by Mira to try branching out a little further outside the usual and somewhat failing at it. The art is, as always, great but the story is severely lacking
Disclaimer: It's been a while since i've read most of Mira's catalogue so my memories on them may be fuzzy. If i'm wrong in a few things, it's unintentional