Alias "inmon" into "womb tattoo"

In hentai pornography, a “womb tattoo,” or inmon 淫紋, “lewd crest” in Japanese, is usually a crotch tattoo or lower stomach tattoo that looks like some sort of crest, or magical rune, and might or might not carry some sexual meaning.

An inmon isn’t necessarily a tattoo.

It just often happens to be a tattoo because of the crest-like shape that tribal tattoos have.

Usually heart/uterus-like mark on crotch or lower belly

Also known as inmon (淫紋, “lewd crest” in Japanese), a mark on crotch or lower stomach, that looks like some sort of crest, or magical rune. It isn’t necessarily a literal tattoo: it may be branded, or burned, or written magically, or painted on. It may glow with magic or electricity or whatever. Since it’s usually sexually suggestive or related to sex somehow, it’s normally pink or red, and normally in the shape of a heart, because love and all that. As a heart can look like an uterus if distorted enough, some designs look like a heart-womb or a heart in a womb or something of sort, which is where the term “womb tattoo” comes from.

In hentai, tattooing a magical inmon often gives the wearer a “curse,” noroi 呪い, that makes them lewder and more perverted and stuff like that, or vice-versa: cursing someone makes an inmon appear.