Mero Mero no Mi (KK21)

The Mero Mero no Mi is a Paramecia-type Devil Fruit that allows a range of attacks which use emotions of lust or perversion to transform opponents into stone. "Meromero" is an onomatopeia of "to fall down drunk", including being overcome with emotion such as love or lust. In the Viz Manga and FUNimation subs, it is called the Love-Love Fruit. It belonged to the World Noble who fed it to Hersoma ave Fénix.

Strengths and Weaknesses
The major strength of the fruit, as demonstrated by Hersoma, is that the user is able to transform those who lust after the user into stone in varying degrees by using their "dirty thoughts". Victims that have been completely turned to stone are incapable of consciousness and susceptible to physical damage unless the user de-petrifies them. Petrification can also be achieved through physically striking an opponent, although the only area that is turned to stone is the contacted area, as opposed to the entire body. Inanimate objects are also susceptible to the fruit's power.

While the fruit's powers, specifically the aforementioned technique, use the focused lust of a user's victim to fuel the petrification, if the intended targets have no lust towards the user, then the powers are nullified. This can be achieved either by being distracted by other emotions, such as pain and fear, or by simply lacking lust to begin with. Monkey D. Luffy is the only character seen immune to the effects, though he initially believed the attack aimed at him to be an attack from Foxy's Noro Noro no Mi. Apparently, once the petrification takes effect, the victim(s) experience a state of suspended animation where their subjective sense of time is completely halted by the fruit's power, effectively making it look to them as though time itself has stopped from the victim's point of perspective, and will last this way until Hersoma chooses to relinquish their petrified states.

Other than that, this fruit doesn't seem to have any specific weaknesses outside the standard Devil Fruit weaknesses.

Usage
Hersoma uses this Devil Fruit power to petrify her victims. However, the contradictory story that her fellow Kuja are given is that she and her sisters killed a Gorgon and were "cursed". The Gorgon gave each sister a set of eyes on their backs. Whenever anyone sees the back of her and her sisters, they turn to stone. This story is actually a lie, concocted to hide her shameful past as a slave at the hands of the Tenryubito. Hersoma's Devil Fruit was originally fed to her for entertainment purposes only.

Hersoma uses her ability, within a conjunction of any feelings held about her, by whomever she wishes to attack. As long as her opponent is not distracted by any other emotions or feelings (such as fear or pain), she can cause anyone of either gender to fall for her, upon which she can activate the full extent of her abilities. This fruit's power is extremely effective, especially given the fact that Hancock is virtually unmatched in beauty, which makes just about everyone easily attracted to her.

Even without the use of any kind of special technique, Hersoma can use her great physical prowess to attack in hand-to-hand combat; her Devil Fruit gives her the ability to turn anything she strikes to stone, and also does not need the victim to lust after her. This allows her to take down opponents that possess little to no thought (like the Pacifista).

Attacks

 * Mero Mero Mellow (メロメロ甘風（メロウ）): Hersoma's signature technique, she forms a heart shape with her hands and launch a beam of the shape. Anyone with "dirty thoughts" (lust) hit by this beam will be turned into a stone statue. The beam's effect can be blocked if the target doesn't have any lust for Hancock, either by focusing on other emotions (as Momonga) or simply being ignorant (as Luffy). Mero Mero Mellow reminds Luffy of Foxy's Noro Noro Beam. This attack seems not to kill targets, but rather put them in a form of stasis, as when Hersoma revived the soldiers on the Marine Warship, they kept uttering the end of the sentence they spoke when they were petrified and even carried the same momentum. Any affected persons' body can be destroyed, due to the fact that it is stone. This is called Love-Love Mellow in the Viz Manga and Love-Love Beam in the FUNimation subs. The pun in this technique is that those who are vulnerable to this technique essentially become slaves to it.


 * Mezameyo (目覚めよ): Hancock blows a kiss at a person or people previously turned to stone by Mero Mero Mellow, which causes small hearts that wash over them and restore them to their normal state. The pun here is that all accounts from former real-life slaves refer to freedom as an "awakening"; so too are the "slaves" of the Mero Mero Mellow essentially "awakened" from the "slavery" of petrifaction stasis. The added imperative at the end of this phrase is not unlike an order being given; another back reference to Hersoma's dark past.


 * Pistol Kiss (銃（ピストル）キス): Hersoma is able to use a projectile-like move by blowing a kiss, creating a heart-shaped bullet to fire at her victim by aiming it with her index finger, which she uses together with her Busōshoku Haki to hurt the foe. The pun here is that the kanji for gun (銃) is part of the phrase "jū no tsutsu" (銃の筒), meaning "gun barrel", which Hersoma's index finger is essentially serving as, in order for this technique to work. It is unknown if this attack would petrify the opponent if it worked, since it's only been used once, against Luffy, who has no lust towards Hersoma.


 * Slave Arrow (虜の矢（スレイブ･アロー）): Hersoma breathes in deeply and kisses out a heart; similar to her Pistol Kiss, but much bigger. She then pulls the heart back with a hand and, with a pop like that of a bubble, hundreds of arrows (all of them tipped and fetched with a stylized heart design) are fired and barrage her opponent(s) before petrifying them; the sheer number of arrows unleashed makes this move particularly difficult to evade. This technique not only petrifies anyone and anything that it hits, but somehow manages to freeze them in place, regardless of whether or not they were in motion or not, to the extent that she even stopped cannonballs in their tracks. The pun in this technique is that, although the kanji used here (虜) may mean "imprisonment", it can also mean "captive", as in someone being captivated by love.


 * Perfume Femur (芳香脚（パフューム･フェムル）): Hersoma does a handstand and spins around in order to deliver a series of kicks. Anything she hits, including inanimate objects like swords and animate objects such as people, instantly turn into stone and, in turn, break from the sheer force of her kicks. Unlike her other attacks, only the immediate area around the point of contact turns to stone, not the entire object. The pun here is that when Hōkō, the actual pronunciation of the first two kanji symbols, is written another way (奉公), it can mean "apprenticeship" in the sense of "indentured servitude".