Arc of Pheromone

Arc of Pheromone (のアーク, Feromon no Āku; lit. "Arc of the Excreted Chemical Substance") is a Caster Magic that's considered to be one of Valentina Lovegood's signature magics, allowing her to subjugate nearly any and all of her foes without participating in too much conflict; as the name would ever subtly allude, it allows the user to manipulate and generate various types of, and to an extent — , from their person, bringing about various effects in either themselves or in the target. According to those that know her, she's considered to be one of the magic's most powerful users to-date simply because of how she utilizes her charms and wit to fully bring out the magic's effects.

According to Valentina, this magic has been created very recently, thus there are no past records of its existence — making it mostly unknown. However, its effects can be deciphered and countered if one is skilled in anatomy. It's said that the other name for this magic is "Scented Biological Essence Magic" (香生体本質の魔法, Kaseitai Honshitsu no Mahō).

Overview
"Do you know why people find my constantly attractive? There are major factors to it including my good looks and charm. However, there's one major factor that stands above them all, stemming from my constant usage of this magic. Yes, I manipulate and secrete hormones from my body to make them act that way. Of course, I can do other things by..... simply changing up the composition a bit. Though, there are some that are resistant to my "unique scents". It's those people that are considerably strong, even by normal standards."

- Valentina's revealing the secret of her exaggerated popularity and her methods of finding strong opponents.



Trivia

 * This is one of the few Arc magics that's not classified as either an Ancient Spell or a Lost Magic due to how it was recently introduced to the modern era.
 * The reason why the author created this article is because he wanted a way to improve Valentina's status as a seductress and make reference to her demonic heritage. Also, he felt inspired by the fact that pheromones can be weaponized to an extent and can affect a variety of targets, something he felt fits perfectly with Valentina's combat style, which stresses long-range, trickery, and manipulation.