Genie （High-resolution version）

Family: Spirit ・ Type: Elemental

Habitat: Deserts (ruins)

Nature: Cheerful, mean

Diet: The essence of human men

Genies are spirits that dwell within sacred treasure called magic lamps. It is said that they were created by the god of sun, and given to kings of deserts.

They usually sleep in their lamp. When human men rub the lamp, they will appear with smokes and grant wishes by magic power that it can be said almighty.

Their origin was not monster, but the creation of god of the sun. However, they turned into monsters because of kings of deserts turning into monsters.

Genies are the sacred treasures, so their existences itself are the almighty magic spell. They are able to make miracles happen with themselves.

However, their omnipotent power is restricted by contracts for upkeep and control. Thus, they can perform their power as only the way to grant wishes for who summoned her.

In addition, to use their power, adequate mana for granted phenomenon should be poured into their bodies, which is the vessel storing mana. 

Supplying mana to genies, which are monsters is done by obtaining the essence i.e. sexual intercourse.

It means that the man who summoned her must have intercourse with her to have her grant his wish. If his wish is big, he has to pour a large amount of essence into her body by getting laid with her repetitively.

If a man wishes "immortality", it will cost his lifetime without end to continue to pour the essence and he will spend eternity fulfilled with pleasure and sex.

Genie's bodies are created to be poured mana. Their bodies heighten pleasure and during ejaculation in their vagina, and prolong ejaculation.

This occurs during the ejaculation in their mouth and the exchanging saliva. 

Every time a man has intercourse with a genie to fulfill his wish, he wallows in her existence and an act of pouring the essence more and more. He will come to desire the intercourse with her and ejaculation more than the original wish in due course. In the end, he will wish "making her his own eternally" on her.

Contracts constraining genies are weakened because they turned into monsters. They generally follow contracts, and grant a wish of who summoned her as her master. However, when they are not pleased with the wish, they demand a large number of intercourse far more than originally required, and seduce a man to consume saved mana suggesting further pleasure.

As described above, they express their capricious and freewheeling nature because of turning into monster, and they do not have an absolute obedience to their masters. Their masters virtually cannot fulfill wishes without their agreement. 

Their magic lamps are magic items gathering mana around to sustain existence of genies. After genies have a constant way to ingest more high-quality mana i.e. husband, they do not require magic lamps anymore, get free of binding of lamp and contracts, so they do not have to obey him and grant his wishes. 

Genies follow their desire while they get freedom; however, they love their husbands and grant wishes as their desire.

The price of wishes will be not "intercourse required for the magic" but "endless intercourse as that genies desire and wish for".