@saby
I think all together sends a certain message, isolating each on their own maybe not an issue but together I think it’s clearly provactive.
On the nose, sure I suppose it’s not specifically hitting any mark but the general description of “Suggestive” seems pretty relevant:
“Sexual implications and risqué/indecent acts or appearances like nudity.”
Yes, the characters are normally “naked” but there’s different sorts of nudity, in this the character is kneeled on the ground looking back, blushing, in a pose like was said usually used in pin ups, in clothes usually prominent in genres of porn, I think it highlights her “body” in the pose although no specifically sexual part is highlighted I think the best call would be to deem it risque and suggestive. I would think Suggestive and Questionable ratings would cover the gray area between Safe and Explicit, and I think Safe should be playing it “safe”.
Sorry for the essay on a pony image site, TL;DR I think there’s good grounds that this shouldn’t be safe. Safe and Suggestive/Questionable gray zone should maybe be considered more heavily.