Nyotaimori

[2][3] The origin of nyotaimori can be traced back to the food play of wakamezake (わかめ酒) performed in yūkaku during the Edo period, where sake would be poured into a prostitute's pubic region for drinking.

The nyotaimori practice dwindled as family and private trips to the onsen destinations became increasingly popular in the 1980s and it was subsequently adopted by catering and sex establishments as an exotic attraction.

[4][5] Due to the lack of primary sources, the misconceptions of nyotaimori's origin persisted when the practice became internationally known through popular culture.

[6][7] In traditional nyotaimori, the model is generally expected to lie still at all times and usually not talk with guests until the event is concluded even after all food is removed.

[10] In 2005, China outlawed nyotaimori on naked bodies, condemning it due to public health concerns and moral issues.