Phosphor

Phosphor
Move Information
Japanese Name	燐 (りん)
Rōmaji Name	Rin
User	Shoto Todoroki Dabi
Move Range	Varies
Capabilities	Power Up Defense Offense
First Appearance
Manga Debut	Chapter 336 Chapter 351 (Named)
Anime Debut	Episode 141 Episode 146 (Named)

Phosphor (燐 (りん) , Rin^?), full name Flashfire Fist: Phosphor (赫 (かく) 灼 (しゃく) 熱 (ねっ) 拳 (けん) 燐 (りん) , Kaku Shakunekken Rin^?), is an Ultimate Move performed by Shoto Todoroki and Dabi using the Half-Cold Half-Hot and Blueflame Quirks, respectively.

Description

Shoto developing Phosphor.

When Shoto uses Phosphor, a large "X"-shaped flame (orange on the left and a turquoise-like color on the right) stretches outward from the center of his chest, crossing over his shoulders and cutting diagonally across his waist. The center of this flame is white, which Denki Kaminari says is not hot to touch. By using his heart as a generator to spread the chilled and hot blood throughout his circulatory system, Shoto can channel both halves of his Quirk to merge them into a single ability.

The move grants Shoto an incredible defensive and offensive advantage against most opponents, especially those wielding pyrokinetic Quirks. The flames created by Phosphor are described as being a "cold fire" of sorts, allowing him to both burn and freeze his opponents. It takes a certain amount of concentration and focus to build up, so if Shoto loses control of it, he has to build it back up again.

Phosphor was first shown being developed during a training session between members of Class 1-A in the U.A. courtyard. It is described by Shoto as his Quirk coming together "as one" to create "a body even Dabi can't burn". He first named and used it while fighting Dabi during the Final War to protect himself from his brother's Jet Burn, as well as to power two of his Ultimate Moves, Coldflame's Pale Blade and Great Glacial Aegir.

After being seemingly defeated by Shoto using this technique, Dabi is able to replicate it using his own Quirk to reinvigorate his body and cancel out Shoto's ice. It is later shown that Dabi manifested ice powers similar to his mother's Quirk, and is using them to power his version of Phosphor. Dabi's own "X"-shaped flame across his chest is purple, with a white center where his ice is located, though it is notably smaller than Shoto's.

Gallery

Shoto using Phosphor in the manga.

Dabi using Phosphor in the manga.

Related Techniques

	Coldflame's Pale Blade (冷 (れい) 炎 (えん) 白 (はく) 刃 (じん) , Reien Hakujin?): Using the combination powers of Phosphor, Shoto throws a piece of the conjoined fire and ice at his opponent, launching them a great distance backward.
	Great Glacial Aegir (大 (だい) 氷 (ひょう) 海 (かい) 嘯 (しょう) , Daihyō Kaishō?): Shoto builds up his fire and ice, rushes toward his opponent, hits them with his fist and unleashes a massive wave of cold fire, able to extinguish the hottest of flames, as well as cover a massive section of terrain completely in ice.

Trivia

• Shoto's appearance while using Phosphor resembles his father's second hero costume.
• Phosphor is named after phosphorus, a chemical element that exists in two major categories: white phosphorous and red phosphorous. The former emits a faint glow when exposed to oxygen at a cold or room temperature, while the latter is created by a chemical reaction that occurs when white phosphorous is heated to 250 degrees Fahrenheit (121 degrees Celsius). Therefore, Phosphor's ability to combine both the fire and ice of Shoto's Quirk (signified by his red and white hair) is similar to the chemical element.