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Half-Cold Half-Hot ( (はん) (れい) (はん) (ねん) Hanrei Han'nen?) is the Quirk used by Shoto Todoroki.


Half-Cold Half-Hot allows the user to generate ice, frost, and cold from the right side of their body and fire, flames, and heat from the left. However, the user is unable to manipulate either element that comes from an external source; they can only create them from their body.

Half-Cold Half-Hot's power is perfectly divided between the right and left sides of the user's body.[1] This gives the user two powerful, separate methods of combat that they may use regardless of the other.

As part of his training, Shoto submerged himself in a barrel of water and alternated between his ice and fire abilities to regulate the temperature of the water. His body becomes accustomed to the cold, and he learns to control the power output of his flames. This training also helped him learn to use both sides at the same time,[2] which Shoto acknowledged he initially could not do so reliably due to having used and became better accustomed to his right side's ice abilities than his left side's fire abilities.

Shoto's later development of Half-Cold Half-Hot has allowed him to generate either element on either or both sides of his body, as well as combining the two into a “Cold Fire“ that simultaneously burns and freezes opponents. This development has effectively turned his one Quirk into two, as well as giving protection from even the most intense of flames.[3][4]


The user needs to constantly alternate the use of both elements, heating themselves with the left side after creating a great volume of ice or cooling with the right side after generating strong flames. Overuse of either side without the other to regulate their body temperature could lead to either frostbite or overheating affecting their whole body, with possibly fatal consequences.

When Shoto uses Phosphor, this weakness is eliminated for the duration of the technique, as he circulates both heat and cold simultaneously through his body.


Shoto creating large waves of ice.

Right-Side: Using the right side of his body, Shoto can generate ice to drastically lower temperatures and freeze anything he touches as well as creating solid structures for offense or defense.

Shoto's able to swiftly freeze entire buildings,[5] as well as create large waves of ice instantaneously.[6] Despite its incredible raw power, Shoto possesses great control and direction over his right side. He can restrict the ice to avoid fatally freezing someone, or use precision attacks to freeze only certain portions of a target's body.[7][8][9] If fighting alongside others, he is capable of covering enemy territory with ice while simultaneously preventing it from getting in his allies' way.[10]

Shoto is capable of molding the ice and frost into certain shapes to support himself, such as protective barriers, stairs to elevate himself[11] or a moving wave of ice for him to surf through.[12] Shoto has many mobility options too, like stacking ice shards behind his back to propel himself forward[13] or freezing the ground to skate on it.[14]

Prolonged usage of his right side will lower his body temperature to dangerous levels. When this occurs, Shoto's body gets covered in frost and his ice attacks lose their effectiveness.[15] His maximum output brings him to his temperature limit almost immediately.[6]

As Shoto is far more used to his right side than his left, he instinctively begins attacks with the former. This can be disadvantageous against an opponent that possesses a Quirk that is able to counter it.[10]

Similar to his father's ability to raise his heat to its maximum level, Shoto decided to follow this lead and lower his ice temperature to its coldest level. This was first demonstrated when Shoto froze Chimera by drastically dropping the temperature of his ice, and while it was successful in freezing him, Shoto's body could not handle overexerting himself, resulting in frostbites spreading all over his body and knocking him unconscious.[16]

Shoto shooting streams of fire.

Left-Side: From the left side of his body, Shoto can generate fire to drastically increase temperatures and burn anything he touches.

When Shoto ignites his flames, the resulting blaze covers his arm and the left side of his head. He is able to shoot out consuming streams of fire or protective short waves of it.[17] After upgrading his costume to help him control his temperatures, the flames only ignite on Shoto's hand, displaying more command over his left side.[18]

Due to Shoto's animosity towards his father, Enji Todoroki, he held off on using his left side offensively for most of his life, activating it only for thawing victims of his freezing attacks.[1] After battling Izuku Midoriya during the U.A. Sports Festival and talking with his mother, Rei Todoroki, Shoto finally began to accept and embrace his left side, becoming able to produce large-scale fire attacks like walls of flames.[19] However, despite Enji teaching Shoto from a young age that the flames his son can produce are unrivaled, Shoto still prefers to use his ice more. As a result, his manipulation of flames is still rather poor in comparison to the finesse of his right side. His lack of control made adjusting to the high temperatures of his flames difficult for him as well.[20]

Shoto's flames at full power.

During the Joint Training Arc, when confronted with Tetsutetsu Tetsutetsu, who could resist extreme temperatures and was unaffected by freezing attacks, Shoto found himself having to go past his limit and unleash the full might of his left side. Shoto's strongest flames are hot enough that they threatened to melt Tetsutetsu's Steel body, while nearly setting all of Ground Gamma ablaze. It's possible that Shoto can increase his fire's temperature even higher, but Juzo Honenuki prevented him from attempting so. According to All Might, Shoto's flames at full power are as strong as Endeavor's own flames.

Overusing his fire can cause his body to overheat and induces dizziness that can render him unconscious if not kept in check; a weakness he shares with his father. Endeavor even stated that even though Shoto's flames have the potential to surpass his own, Shoto using his flames at full power is still dangerous, especially if he can’t control them.[21]

Fortunately, Shoto is capable of using his other side to counteract the dangerous effects of whichever one he happens to be overexerting.[11] Activating both sides simultaneously is possible as well,[2] but lack of practice has made this awkward for him as it dulls his movements.[22]

By chilling the air using his ice and then heating it in an instant through his fire, Shoto can release a huge super-heated blast of flame that devastates anything on its path.[23] Overall, Shoto's strongest attacks tend to be of a very impressive scale, although that's not always a good thing, with Katsuki Bakugo once noting that Shoto loses some of his precision when attempting to overwhelm his enemy.

By the end of the war and after training with the Pussycats, Shoto has managed to gain an almost equal mastery of his left side to his right side, bridging the gap of inexperience with his left side due to his animosity towards his father.[3]

Super Moves

Shoto Todoroki tries to freeze Mr. Compress.gif Heaven-Piercing Ice Wall (穿 () (てん) (ひょう) (へき) Gaten Hyōheki?): Shoto uses his freezing powers to generate a giant, glacier-like wave of ice. He first used this move on Hanta Sero in the U.A. Sports Festival.[6] It remained unnamed until the Final Exams where Momo Yaoyorozu dubbed it. Shoto used a smaller variation of this move against Katsuki,[24] and the largest version was used to attack Mr. Compress. Shoto again used this move against Izuku.[25]
Wall of Flames.gif Wall of Flames ( (ほのお) (かべ) Honō no Kabe?): Shoto uses his burning powers to generate a burst of flames that covers a large area. He first used this move on Tetsutetsu in the third round of the Joint Training Battle.[19]
Flashfreeze Heatwave.gif Flashfreeze Heatwave ( (ぼう) (れい) (ねっ) () Bōrei Neppa?): To use this technique, first Shoto cools the air around him with his ice powers. Then, by switching to his fire, Shoto rapidly heats and expands the air around him. This allows him to release a super-heated blast. He first used this move against Izuku when the two battled at the U.A. Sports Festival.
Shoto charging up Flashfire Fist.png Flashfire Fist ( (かく) (しゃく) (ねっ) (けん) Kaku Shakunekken?): Endeavor's signature technique, later passed down to Shoto himself.[26] The user increases the temperature of their flames to their maximum and compresses them to a white-hot point, maximizing their power.
Hell Spider (ヘルスパイダー Heru Supaidā?): Shoto concentrates his flames into white-hot points on his fingertips and emits beams of fire to slice through his target.[27] Shoto's Hell Spider.gif
Jet Kindling ( (ふん) (りゅう) () (えん) Funryūshien?): Shoto concentrates his flames into a white-hot point on his fist and punches his opponent. On contact, a violent explosion of flames burst out of Shoto's arm, severely burning his target.[26] Jet Kindling used against Leviathan.gif
Phosphor ( (りん) Rin?): Shoto circulates both halves of his Quirk throughout his body, merging the fire and ice into one ability. This Super Move also serves as a basis for other moves Shoto uses.[4] Flashfire Fist Phosphor.png
Coldflame's Pale Blade ( (れい) (えん) (はく) (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.[28] Coldflame's Pale Blade.png
Great Glacial Aegir ( (だい) (ひょう) (かい) (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.[28] Great Glacial Aegir.png


  • Half-Cold Half-Hot stems from the fusion of the Hellflame Quirk of Shoto's father and an unnamed ice Quirk from his mother through a Quirk marriage.


  1. 1.0 1.1 My Hero Academia Manga and Anime: Chapter 31 and Episode 19.
  2. 2.0 2.1 My Hero Academia Manga and Anime: Chapter 113 and Episode 59.
  3. 3.0 3.1 My Hero Academia Manga: Chapter 336.
  4. 4.0 4.1 My Hero Academia Manga: Chapter 351.
  5. My Hero Academia Manga and Anime: Chapter 11 and Episode 8.
  6. 6.0 6.1 6.2 My Hero Academia Manga and Anime: Chapter 34 and Episode 20.
  7. My Hero Academia Manga and Anime: Chapter 16 and Episode 11.
  8. My Hero Academia Manga and Anime: Chapter 18 and Episode 12.
  9. My Hero Academia Manga and Anime: Chapter 41 and Episode 24.
  10. 10.0 10.1 My Hero Academia Manga and Anime: Chapter 203 and Episode 95.
  11. 11.0 11.1 My Hero Academia Manga and Anime: Chapter 38 and Episode 23.
  12. My Hero Academia Manga and Anime: Chapter 42 and Episode 25.
  13. My Hero Academia Manga and Anime: Chapter 111 and Episode 59.
  14. My Hero Academia Manga and Anime: Chapter 25 and Episode 16.
  15. My Hero Academia Manga and Anime: Chapter 39 and Episode 23.
  16. My Hero Academia: Heroes: Rising.
  17. My Hero Academia Manga and Anime: Chapter 53 and Episode 29.
  18. My Hero Academia Anime: Episode 55.
  19. 19.0 19.1 My Hero Academia Manga and Anime: Chapter 204 and Episode 96.
  20. My Hero Academia Manga and Anime: Chapter 60 and Episode 30.
  21. My Hero Academia Manga and Anime: Chapter 205 and Episode 96.
  22. My Hero Academia Manga and Anime: Chapter 106 and Episode 55.
  23. My Hero Academia Manga and Anime: Chapter 40 and Episode 23.
  24. My Hero Academia Manga and Anime: Chapter 43 and Episode 25.
  25. My Hero Academia Manga: Chapter 320.
  26. 26.0 26.1 My Hero Academia Manga: Chapter 290.
  27. My Hero Academia: World Heroes' Mission.
  28. 28.0 28.1 My Hero Academia Manga: Chapter 352.

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