The art being damn near spot on is the only thing that saved this from me rating it a 1/10.
There's no intercourse, or really any kind of sexual contact, whatsoever. It's just Kotone showing off her naughty bits for a few pages, which by the way, includes heavy censoring over her vulva.
If Asahi (sensei) was the MC, instead of Kotone, I'd have given this a 5 or 6.
Actual sexual contact would have added even more to the rating; at least 2 or 3 additional points.