Kyoshi Arun Kumar Dev
Founder of MuddyMuscles®, dedicated to promoting traditional strength and self-defense training globally.
Experience as Martial Arts Teacher
Over Three Decades of Teaching
With over three decades of teaching experience, Kyoshi Arun Dev has trained thousands in traditional martial arts, blending discipline, self-defense, and cultural values to inspire strength and confidence across generations.
30+ Years Experience
Mr Dev
The Scholar: A Career Devoted to Education
A Lifelong Educator Shaping Minds Through Libraries and Leadership
Expert in following training
Shotokan Karate
Kyoshi Arun Dev’s Shotokan training emphasizes disciplined movement, mental focus, and powerful technique rooted in traditional karate excellence.
Self Defense
Kyoshi Arun Dev’s self-defense training empowers individuals with practical skills, situational awareness, and the confidence to protect themselves in real-life situations.
Close Combat
Kyoshi Arun Dev’s close combat training focuses on real-world self-defense, rapid response, and practical techniques for personal safety and control in high-pressure situations.
Situational Analysis
Nulla porttitor accumsan tincidunt. PellentKyoshi Arun Dev’s situational analysis training sharpens awareness, decision-making, and threat evaluation skills—preparing individuals to assess environments quickly and respond effectively to real-world challenges.esque in ipsum id orci porta dapibus
The Scholar: A Career Devoted to Education
Born with a natural love for knowledge, Arun Dev began his professional journey in 1995, taking on the role of Librarian at Saharanpur Public School, a well-known co-educational ICSE-affiliated residential school in Uttar Pradesh. For 11 years, he played a vital role in creating a learning culture among students, promoting reading habits, and introducing systems of order and inquiry in the academic environment.
His passion for education took him to Dehradun, where he continued as Librarian-cum-House Master in reputed schools like GRD Academy and Drona’s International School. Here, his responsibilities went far beyond books—he mentored students in both academics and life skills, ensuring holistic growth in a residential setting.
In 2012, Arun Dev returned to his home state of Kerala, joining Dayapuram Arts and Science College for Women (NIT Campus, Kozhikode) as Librarian. For a full decade, until 2022, he served not just as a custodian of books but as a cultural and intellectual guide, especially for young women learners. He continued his academic contribution at The Choice School, Vellalasheri, a CBSE school where he worked until May 2025, consistently engaging students and faculty in meaningful educational experiences.
Academic Qualifications:
Postgraduate in Hindi (Sahityacharya) – KHPS
Diploma in Library Science – Kurukshetra University
Bachelor in Library & Information Science – Alagappa University
The Warrior: A Master of Martial Arts
While his professional life as an educator flourished, Kyoshi Arun Dev was simultaneously nurturing another path—one of martial discipline, mental clarity, and physical mastery. His dedication to martial arts spans over three decades, and he is widely known for reviving and promoting traditional systems of self-defense and strength training.
He holds a prestigious 7th DAN Black Belt and the title of Kyoshi from SANKUKAI Japan, recognizing his status as a senior teacher and mentor in the world of martial arts. His journey in karate and self-defense began in North India and evolved through multiple key roles:
Karate Coach at IIT Roorkee (P & P)
Secretary and Regional Karate Coach for JKS South India (3 years)
Chief Instructor, SANKUKAI Asia (since 2018)
Secretary General, SANKUKAI World Organization
Arun Dev has not only mastered techniques but has taught and certified thousands of students, conducted grading examinations, and built a network of karate schools and dojos across India and beyond.
Certifications and Expertise:
National Accredited Karate Coach
National Judge – Karate
Examiner “A” License Holder – SANKUKAI Japan
International Japan Tour – Advanced Training with Soke Takeshi Kitagawa
His strength lies in teaching not just the moves but the mindset and philosophy behind martial arts—emphasizing calmness, confidence, and clarity in real-life situations.
Blending Worlds: MuddyMuscles® and Modern Training
Kyoshi Arun Dev, along with his son Sensei Sudarshan Dev, launched MuddyMuscles®, a unique platform that blends Indian traditional strength systems with modern training tools. Their app, Sentojutsu®, offers online video-based modules.
Through Sentojutsu®, users can now access authentic Indian fitness traditions from the comfort of their homes or dojos.
Training the Nation: Corporate and Community Outreach
Beyond dojos and classrooms, Kyoshi Arun Dev actively conducts corporate self-defense workshops, especially focusing on:
Situational awareness & tactical training, EDC (Everyday Carry) safety mindset, Women’s empowerment through practical defense skills, Stress and resilience management for professionals
He has led programs across schools, colleges, government teams, and private sector groups—combining discipline, technique, and psychological preparedness.
Back to Roots: Nature-Based Events & Cultural Revival
Through MuddyMuscles®, Kyoshi Arun Dev also champions the revival of India’s warrior culture through:
Trekking events and warrior camps in Kerala
Route-based nature fitness programs
MuddyMuscles® Games and Traditional Competitions
Promotion of training in traditional Kalari Dhoti attire
These initiatives not only build physical strength but reconnect participants to India’s ancient physical wisdom, community bonding, and rural endurance.
Legacy of a Life Well Lived
From a school library in Saharanpur to training halls in Japan, from mentoring students in Dehradun to leading global martial arts organizations, Kyoshi Arun Dev has walked a path few can match. His life is a testament to what can be achieved when intellect, discipline, and purpose come together.
Through every class, every kata, and every book he’s introduced, he has empowered minds and strengthened bodies. Today, as a mentor to the next generation and leader of a global martial arts movement, his journey continues—rooted in values, driven by vision, and powered by purpose.
