I'm always baffled by this community's aversion to toys. Like LOTS of women use toys it's totally normal and yet they're like the number two thing people complain about after het.
That out of the way, I adored this doujin it's so nice to see actual SSC BDSM. Like BDSM yuri is already pretty damn rare but BDSM yuri that actually adheres to proper practices is a frickin unicorn.
This was my feelings on it too! I don't know much about the characters themselves, but I adored how solicitous they were of each other's feelings/comfort. So sweet! <3 I was kinda astonished, because reading it made me stop and think "have I ever seen anything where characters acted like this?" D: