Melt Lilith and Passion Lip being naughty girls...
Not worksafe. Lots of those, huh.
http://imgur.com/4LfuGAa
(You can almost hear Gilgamesh in the background shouting "Rule Breaker!" :P)
- - - Updated - - -
http://imgur.com/H3IkmCG
BBallet?
BEHOLD! THE SIG OF GOLDEN TRUTH! Pillaged from McJon, Tsukikan et al.
1st pic: I thought her name is "Meltilith".
Yes, but "Meltilils(u)" is how it's pronounced in Japanese (I think).
Personally I'd say former = BB, latter = Sakura.
in b4 BUT THEY'RE THE SAME
Tineye is a reverse image search, and not a very good one.
(Protip if you're looking for source on animu pics you want Saucenao 99% of the time, IQDB for the other 1%)