"First Form: Thunderclap And Flash" is a distinctive and iconic technique within the Thunder Breathing style, employed by the character Zenitsu in the series "Kimetsu no Yaiba." This technique involves a swift draw of the katana, resulting in a rapid and powerful cut.

The variations of this form, such as sixfold, eightfold, and Godspeed, showcase the versatility and skill of its users. Zenitsu's mastery of this technique is highlighted by his ability to perform it unconsciously, demonstrating the deep integration of this technique into his combat repertoire.

The sheer impact of this technique is evident in Zenitsu's remarkable ability to effortlessly dispatch demons with it. Furthermore, the potential for further enhancement of its power indicates the significance of Zenitsu's character progression and his potential as a formidable demon slayer.

Kaigaku's "Second Form: Rice Spirit" technique is a formidable part of his arsenal, especially after becoming a demon under Kokushibo's influence. This advanced Thunder Breathing technique involves a sequence of five razor-sharp slashes enhanced by potent bolts of black lightning, making it a deadly and formidable attack.

The technique showcases the terrifying prowess of Kaigaku as a demon, capable of overwhelming even the most powerful opponents. However, despite its lethal nature, Zenitsu's exceptional reflexes and perceptiveness allowed him to evade the worst effects of this devastating attack. As one of the lesser-known techniques in the series, "Second Form: Rice Spirit" serves as a testament to the intensity and complexity of the combat arts within the Demon Slayer universe.

The "Third Form: Thunder Swarm" technique is a frightful skill within the Thunder Breathing style. This technique surrounds the target with a stream of lightning, making them vulnerable to attacks from all directions, rendering it challenging to block or evade.

The effectiveness of this technique lies in the inability of the target to escape, resulting in substantial damage. Amplifying this danger, Kaigaku's electrokinesis can enhance the attack with black lightning, exponentially increasing its destructive potential. This combined assault, with the addition of sword strikes, presents a nightmarish scenario for opponents.

Kaigaku's mastery of this technique showcases its lethal nature, and his relentless onslaught highlights its capacity to overwhelm even skilled adversaries. Overall, the "Third Form: Thunder Swarm" technique exemplifies the sheer power and devastation within the Thunder Breathing style, posing a formidable threat to any who face it.

The Fourth Form: Distant Thunder technique, a prominent skill in Thunder Breathing, showcases the formidable electrokinetic powers of its practitioner, Kaigaku. Through this technique, a ball of lightning is generated, releasing a barrage of lightning strikes aimed to impede and potentially mortally wound adversaries.

This lethal ability demands extraordinary speed and strength to evade its devastating lightning assaults, making Zenitsu's efforts in battle paramount. The intricate dance of combat required both Thunder Breathing wielders to operate at the pinnacle of their capabilities to emerge victorious.

Any significant damage posed a risk of sidelining Zenitsu, underscoring the high stakes of the encounter. This technique not only demonstrates the immense destructive potential of Thunder Breathing but also emphasizes the critical role of skill and agility in navigating its perilous effects.

The Fifth Form of Thunder Breathing", known as "Heat Lightning", is a forceful technique that manifests as a powerful upward sword slash accompanied by a bolt of lightning. This versatile move is capable of cleaving through most targets with ease, demonstrating its destructive potential. Kaigaku's mastery of Thunder Breathing allows him to convert most of his attacks into ranged strikes, posing a significant threat to his opponents.

The sheer speed and intensity of "Heat Lightning" make it challenging to block or evade, requiring exceptional reflexes for any chance of defense. Even then, avoiding damage entirely remains a formidable task. Kaigaku's proficiency with this technique exemplifies the potency of Thunder Breathing, emphasizing the formidable nature of those who wield such Breathing Techniques, making them forces to be reckoned with in combat.

The "Sixth Form: Rumble and Flash" technique in Demon Slayer is a long-ranged series of lightning attacks characterized by swift strikes and extended lightning attacks. This technique wears down opponents with relentless pressure and lightning strikes, making it the most powerful technique in Kaigaku's arsenal. Despite the formidable nature of this technique, Zenitsu's speed and resilience enabled him to withstand the assault and counter with his own powerful Thunder Breathing attack, ultimately defeating Kaigaku.

The technique showcases the fierce and dynamic nature of combat in Demon Slayer, highlighting the crucial role of perseverance and determination in overcoming formidable opponents. "Rumble and Flash" serves as a testament to the intense and captivating battles that unfold within the series, contributing to its widespread appeal among fans.

Zenitsu's "Seventh Form: Honoikazuchi No Kami", a unique technique within Thunder Breathing, showcases the pinnacle of the art. This lightning-infused technique amplifies the user's speed to extraordinary levels, culminating in a devastating strike capable of obliterating any foe.

Illustrated as a Lightning Dragon in Zenitsu's battle aura, this Herculean technique emerges as the epitome of his mastery. Notably, Kaigaku's inability to fully grasp Thunder Breathing's First Form holds him back from achieving true mastery, in stark contrast to Zenitsu's evident proficiency in Thunderclap and Flash, which led to the creation of this unparalleled technique.

The unparalleled power and speed of "Honoikazuchi No Kami" set it apart from Thunder Breathing's foundational techniques, culminating in a spectacular showdown that captured fans' imaginations. The forthcoming adaptation of the Infinity Castle arc in the anime promises to further bring this incredible battle to life, igniting anticipation among enthusiasts.