That’s “belly buttons and beautiful boobs”, or more precisely, the intersection of the tags おへそ and 極上の乳. Surprisingly, out of 1,186 and 1,140 images, respectively, there were only 98 that matched both, so I threw them all in.
This is really more of a tagging limitation than anything else; Pixiv users don’t go as wild tagging every possible element in a picture the way they do on some other image boards. Makes it trickier to assemble a theme sometimes.
“This ain’t my finger, either!”
Markdown formatting and simple HTML accepted.
Sometimes you have to double-click to enter text in the form (interaction between Isso and Bootstrap?). Tab is more reliable.