Womb Tattoo

A Womb Tattoo, or Inmon 淫紋 (lit "lewd crest"), is a tattooed crest or magical rune located on a character's crotch or lower stomach that, as a trope, might or might not carry some sexual meaning.

As a trope, the presence of an inmon alludes that the character is lewd, or has a "curse", noroi 呪い, or magical influence that makes them lewder and more perverted than normal, or vice-versa: cursing someone to do lewd acts makes an inmon appear on their body.

An inmon is referred to as a "womb tattoo" because of its location being just above the womb and because its design is reminiscent of the shape of a womb. Designs can range from simple hearts to shapes resembling fallopian tubes and ovaries. Some incorporate bat wings to reference the Succubus. While others may use the "lily" flower, which in Japanese is yuri 百合, which is also a genre of lesbian fiction.

Trivia

 * An inmon isn't necessarily a tattoo, it could be a mark branded, or burned, onto the character's body or just written magically, or simply painted on. As is the case with "magical tattoos" an inmon may also glow with magic or electricity.
 * While typically located on the crotch or lower stomach, the inmon doesn't really need to the be on the crotch. It could be on the breasts, or on the lower back (a tramp stamp). Typically anywhere that is associated with sex or sexuality.
 * Since an inmon is considered "lewd," and is considered sexually suggestive or related to sex, the typical inmon design is normally pink or red, and normally in the shape of a heart.
 * Male characters can also get womb tattoos despite not possessing wombs. The same traits apply to male characters with inmon tattoos as female characters with inmon tattoos.