During the Hashira Training Arc in Demon Slayer: Kimetsu no Yaiba, several Hashira train Tanjiro and the other Demon Slayers to prepare them for the final battle against Muzan. Each Hashira teaches a different skill based on their specialties.
Who Trains and What Each Teaches
1. Tengen Uzui — Sound Hashira

Focuses on physical endurance and stamina, using exhausting exercises, running drills, and intense activities to strengthen the body of the Demon Slayers.
2. Mitsuri Kanroji — Love Hashira

Focuses on flexibility and agility, with exercises involving wide movements, stretching, and even dance-like training to improve mobility and muscle control.
3. Muichiro Tokito — Mist Hashira
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Teaches speed and coordination, helping trainees move their bodies efficiently and precisely in combat.
4. Obanai Iguro — Serpent Hashira

Responsible for swordsmanship training, refining techniques, improving accuracy, and strengthening blade control.
5. Sanemi Shinazugawa — Wind Hashira

Leads intense endurance and strength training, pushing Demon Slayers through harsh combat-like drills to test both physical and mental limits.
6. Gyomei Himejima — Stone Hashira

Focuses on raw strength and toughness, using heavy physical training such as lifting weights and performing demanding exercises.
Participation of Other Hashira
Shinobu Kocho — Insect Hashira
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Due to her physical limitations and reliance on poison-based combat, she does not take part in the intense physical training sessions.
Giyu Tomioka — Water Hashira
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Initially avoids participating, but later joins after being encouraged by Tanjiro. He mainly trains alongside others, focusing on breathing techniques and combat, rather than leading a specific training section.
What the Demon Slayers Learn
- Overall physical improvement (strength, endurance, flexibility)
- Enhanced swordsmanship and combat skills
- Better coordination and movement techniques
- Mental resilience and preparation for future battles
This training acts as a complete preparation phase before the final confrontation with the most powerful demons, strengthening both the abilities and confidence of the Demon Slayers.