Isekai Meikyuu no Ooparts

Deep in the dungeon, I finally found a treasure chest! Inside—gold coins or jewels, maybe—wait, what is this...? It’s all squishy, bowl-shaped, and there's something stuck to the end of the bowl... I got it! This is a boob! In dungeons where adventurers chase dreams and glory, you sometimes find strange, out-of-place items. To make use of these mysterious things, people appraise them, experiment with them—or maybe just sell them off?