Sub-label of Ant-Zen, founded in 1997. Selfpromoted as "Technoid Noises for Collapsing People" it covers the more IDM based side of industrial music.
Early releases often only featured Hymen as label name and for copyrights.

Catalogue number style:

¥0xx for the 12" series with stamps on the cover
¥4xx for LPs, CD3" etc.
¥6xx for promotional gimmicks (t-shirts, posters ...)
¥7xx for CDs

¥002, Instinctive LP by Ultra Instinct, will never be released.

Promotional gimmicks :
¥601 - Silver Hymen metalpin.
¥602 - 12" record bag.
¥603 - Hymen T-Shirt stamp.
¥604 - Poster. 99.