- Ichi no Hiken: Homura Dama (壱の秘剣 焔霊 lit. "First Secret Sword: Burning Soul"): This is the technique Shishio has used the most. Using friction, or using sparks created from the blade and scabbard touching, to ignite the human fats that have soaked into his sword over time, this serves to distract the opponent from his swings. The result is being simultaneously burned and slashed; even if the opponent is to likely dodge the blade, the flame is big enough to likely scorch the opponent as well.
- Ni no Hiken: Guren Kaina (弐の秘剣 紅蓮腕 lit. "Second Secret Sword: Crimson Lotus Arm"): Shishio fills his gauntlets with gunpowder, and ignites them with the sparks caused by the Mugenjin. Thus it results in an explosion. Guren Kaina yields a lot of force and is usually performed while his opponent (such as Kenshin or Saitō Hajime) is at close range, preferably in his grip. Realistically, this technique would most likely result in Shishio's hand being blown apart.
- Tsui no Hiken: Kaguzuchi (終の秘剣 火産霊神 lit. "Final Secret Sword: Fire-Producing Spirit God"): The Kaguzuchi is the ultimate technique in Shishio's arsenal. He activates it by scraping his blade from the base to the tip on the end of the scabbard, creating a miniature fire cyclone around the blade. The technique is not fully revealed, but it's believed that Shishio starts the fire and then slashes at the enemy, thus he can incinerate them entirely while still cutting them. Before Shishio could utilize the Kaguzuchi, he was countered by Kenshin's ultimate attack. The Kaguzuchi (actually Kagutsuchi) is the name of the Shinto god of fire.
- Note: In the Rurouni Kenshin: Enjou! Kyoto Rinne video game for the Playstation 2, when Shishio makes contact with his Kaguzuchi, the flames rise upward and form a giant pillar or wall of flames, sending the opponent upward while severely burning him at the same time. Shishio then emerges from the flames as it dissipates. The opponent is seen falling behind him. This was apparently used in Rurouni Kenshin Uramaku - Honoo o Suberu although, instead of sending the opponent upward, the victim is engulfed by the strong flames and is incinerated into ashes. In the game Jump Ultimate Stars, Shishio can perform the Kaguzuchi and it is listed as one of his support attacks.
For all of his power and skill, Shishio had a fatal weakness: Because he was set on fire, most of his sweat glands were burned. Therefore, once he engaged in battle, his body heat rose far above normal levels. Though Hōji believed Shishio's body heat contributed to his power in battle, it became his downfall, as he spontaneously combusted after 25 minutes in battle.