any yuri LN with sexual content licensed for English release,
MagiRevo and WataOshi have sex, though I forget if it's as sensual as the early shenanigans of ShuuKara.
Neither have detailed sex scenes like Shuukura. It's implied and/or fade to black.
Shuukura on the other hand does get detailed but I don't think that's the reason it hasn't been licensed. Look no further than Otherside Picnic and the trippy, steamy sex they have in volume 8. Although I did see a couple of comments in JNovel's forum asking if that upcoming part could be published as is. Though it could've been tongue in cheek.
I think we might be in for something big from Miyagi when she buys the necklace for Sendai. Maybe even a confession? A girl can only dream
Well it's said you should dream big and that's definitely dreaming big! I'll eat my shoe if we get a confession along with the necklace. My bet is on a conversation where they firmly nail down how they are exclusive to each other(no lovers label for them unfortunately) and possibly another steamy scene.