Source: https://www.pixiv.net/en/artworks/142858638

Description: Kintama Goya (Golden Ball Hut)
A fresh food restaurant for the common people of the animal society
A restaurant specializing in eating raw human male testicles cut on the spot like oysters.
Outline

Method of serving: Cut open the scrotum of a human male fixed to the table with a knife, spread the skin with a nail, and fix it in place (kintama kira).

Male Circumstances.
Freshly captured wild human male
One day, he is suddenly captured and fixed to a table with little understanding of the situation
Both testicles are eaten and he immediately becomes a "castrated worker",
Thereafter, they are collared and used as cheap labor in warehouses and factories.
Penises are rarely eaten.
Customers usually enjoy and savor the man's reactions of shame, pleading, and despair.