Yes. In fact, more specifically.They are Kakuzu’s boobs.
CIRCUS AKATSUKI AU
I can probably weave traces of Witch Hidan AU in there too
headcanon that road to ninja kakuzu and hidan are just intensely passionate social justice activists
kakuzu aggressively hunts down bad guys for justice and gives bounty proceeds to charity
hidan swears loudly as he aggressively helps rebuild villages and rescues children from slavery
together, they are the ulti-moral duo