Mutant ability: Jihyun’s main ability is pyrophysiology, which means that she can transform her entire physique into fire. The standard level of this power allows its users to keep their transformed body anatomically identical to the original, while a higher level of pyrophysiology allows users to morph into full beings of energy for extremely long periods of time, while also granting them a much stronger and more effective skillset (she has, however, not attained this echelon yet). Her ability allows her to render her body immune to flames, thus being able to become one with most any sort of inferno the world and even universe has to offer. Thanks to this, she is also capable of fire generation: in her blazing form, this skill allows her to immediately gather the heat energy she is emitting and transform it into balls or even whips of fire. While she remains in her human form, though, she has to absorb particles of energy around her in order to create the flames, and these flames are oftentimes smaller in size compared to the ones she can conjure in her fire form. Being fully transformed also allows Jihyun to numb herself to any pain she may gain from attacks, which means that she can still function normally even if she has been hit multiple times already.
Weakness: Because she derives her power from flames, Jihyun is extremely weak against water and ice-related abilities. Direct attacks from users with powers of those two elements could very well put out her fires, thus rendering her attacks useless. Should she get hit when she is fully transformed, then it could lead to her losing bits of her body, such as limbs and pieces of skin. Also, if Jihyun remains in her fire form for extended periods of time, the flames could actually begin eating away at her body, leaving horrible wounds in the wake of their destruction. While she is usually able to control the times she wants to change, Jihyun’s flaming physique will be unwillingly triggered by extreme negative feelings with the likes of rage, despair and heartbreak. Her triggered form may be more resilient, but in turn she is left more vulnerable to pain and will feel every blow dealt to her, even if she is covered in her flames.