safe? I'd rather say questionable. also 3rd eye-sex lol.

actually, I'm very happy it's 3rd eye-sex.

the other alternative would be Koishi stabbing her eyes into Satori's eye, and that's a big nono for me

Thanks a lot for that strange image you planted into my head.

I'd vote for adding to "Uncommon Stimulation" (pool #1622)

ow... it looks quite harmful... even though it's her third eye, with that liquid that gush out from the third eye, it seems like... blood...