Lewd Crest

A Lewd Crest, also known as a Womb Tattoo or Inmon (十手乱舞, literally meaning "Lewd Crest" or "Sexual Demon Tattoo"), is a tattooed crest or magical rune located on a character's crotch, tongue or lower stomach that, as a trope, indicates sexual power emanating from or being forced upon the character.

The tattoo appears in the Taimanin series as a sign of a magical contract binding soul or body, not all are pure magic in nature and some use nanomachines infused with demonic cells. It also is connected to the Incubus and Succubus, that are in some cases able to curse somebody with such a magic crest, resulting in more lustful behavior or control of will.

History
The tattoo exists in multiple versions that tend not to be connected. Some being more technological while others are more magical in nature.

In Taimanin Yukikaze it was visible as the result of a sex slave contract by Under Eden.

Made by Dark World's biotech, a pill would need to be swallowed after signing a contract.

The pill would be filled with nanomachines infused with demonic cells, dubbed the "Myriad Chimera". The nanomachines would then carve the seal on the tongue. In the case of Yukikaze and Rinko, they were tricked into a contract for technically two years but the contract was made void with the help of Asagi that forced the contract maker Real to release them.

Normally such a seal would not just display the condition as sex slaves but also prevent any behavior incompatible with it, such as escape attempts. Being more than one kilometer away from their workplace, would result in an explosive toxin, that leave them limbless.

In the Taimanin Yukikaze OVA this was changed to be a womb tattoo which was only visible if one would not follow the rules.

In Taimanin Asagi 3 the seal (also known as a "hypno slave seal"), is a more complex magical seal, which moves the soul of a target into the tattoo. Oboro would use this on both Asagi and Ingrid making them fight or act as slaves. The seal would be powerful enough to force somebody to obey without noticing it, and disobeying it for a short time could leave damage to the soul. However, the seal was bound to Oboro's live and with her death both Asagi and Ingrid became freed from it.

Media

 * Taimanin Asagi 2
 * Taimanin Yukikaze 2
 * Taimanin Asagi 3
 * Taimanin Asagi ZERO
 * Taimanin Asagi Battle Arena
 * Taimanin RPGX