Kase Ha | Formality & Reality
Martín Fernández (@kaseha), a Spanish karate instructor based in Spain, makes Kase Ha Shotokan videos on self-defense, bunkai and budo philosophy. The channel has about 4,500 subscribers, roughly 1 million total views and a median of about 400 views per video, with about 5 uploads in 90 days. Sponsored integrations are estimated at $150 to $250 per video.
Niche Spanish martial arts audience with engaged, high-intent viewers for sport gear
- Median of about 400 views per video, with a p90 near 1,600 views on recent bunkai uploads.
- Engagement rate of about 2.6 percent, above typical for a channel this size.
- Estimated sponsored rate of $150 to $250 per video, roughly $20 to $35 CPM on median views.
Brand fit report
Content
- Formats
- instructional bunkai breakdowns, book reviews, event recaps and promos, short technique clips
- Tone
- technical, reflective
- Language
- Spanish
- On camera
- Yes, talking head
- Production
- Phone, natural light
- Typical length
- under 90 seconds for Shorts, 8 to 12 minutes for bunkai breakdowns
Audience
Commercial
- Brands seen
- None yet
- Categories promoted
- None yet
- Affiliate links
- No
No sponsorship disclosures found in the last 50 videos; the channel promotes its own courses and a book by José Félix Ramajo ("Yo te protejo") and an event, the Congreso Internacional de Grappling Policial y Militar.
Suitability GARM Brand Safety Floor + Suitability
Family friendly
Violence is depicted in self-defense context ("Autodefensa contra la Violencia Real"), which is instructional rather than gratuitous.
We classify content, never people. No age, gender, ethnicity, religion or political views are inferred about the creator. Audience figures are estimates unless marked verified. Creators can correct anything on their profile.
Platforms
| Platform | Followers | Median views | Uploads, 90d |
|---|---|---|---|
| YouTube | 4.5k | 409 | 5 |
Benchmark score: 17 / 100
Public rule, same for everyone. How it works.
Recent videos
▶🥋 FLOR DE LOTO: Artesanía tradicional para el karate y kob · 249 views
▶🥋 Bienvenidos/as al Dojo Fujiyama | Karate en Albacete desd · 311 views
▶II Congreso Internacional de Grappling Policial y Militar | · 276 viewsLast three uploads, latest today.
Descubre una visión funcional y realista del Karate, basada en la línea Kase Ha Shotokan Ryu, centrada en la autoprotección, el desarrollo personal y los principios del Budō japonés. 🎥 En este canal encontrarás: Vídeos del Sensei Taiji Kase Análisis técnico y táctico aplicado a la defensa personal Principios estratégicos y filosóficos del Budō Entrenamientos, cursos y reflexiones desde mi experiencia 👤 Soy Martín Fernández 8º Dan RFEK · Veterano del COE (GOE III – COE 31/32) Diplomado en Educación Física y Maestro de Primaria Trabajo el Karate como un sistema de autoprotección, más allá de
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About Kase Ha | Formality & Reality
Kase Ha | Formality & Reality is a Spanish-language YouTube channel run by Martín Fernández, an 8th dan karate instructor and veteran of Spain's special operations training, who posts from Spain. The channel focuses on Shotokan karate in the Kase Ha line, with bunkai breakdowns of kata such as Chinte, Nijushiho and Tekki Shodan, plus book reviews and event recaps. Uploads arrive in short bursts, about five per quarter, and most videos run between one and ten minutes.
The channel has about 4,500 subscribers and a median of around 400 views per video. The estimated audience is mostly Spanish-speaking adults interested in martial arts, mostly men, concentrated in Spain. These figures are estimates, not platform-verified demographics.
Brands in sport and martial arts gear may find the audience well matched. Estimated rates are $150 to $250 per video, which works out to roughly $20 to $35 CPM on median views, compared with the $10 to $30 CPM typical of paid ads.
Written from Kase Ha | Formality & Reality's public YouTube profile, platform data and web mentions. Numbers updated 2026-10-19. Kase Ha | Formality & Reality can edit or remove this page at any time.
Questions about Kase
How much does Martín Fernández charge for a sponsored video?
Based on the channel's median views of about 400, an estimated sponsored integration costs $150 to $250 per video. The channel shows no sponsorship history yet, so this is a computed estimate. Contact details unlock on Starbooked for $0.80.
What does Martín Fernández post about on YouTube?
According to the channel description, Martín Fernández posts about Kase Ha Shotokan karate, self-defense bunkai, budo philosophy and book reviews. His website, kaseha.eu, is his declared site, though no excerpts were available for this profile.
How do I contact Martín Fernández for a brand deal?
The channel lists info@kaseha.eu in its public description. Full contact details unlock on Starbooked for $0.80. Boosted creators can be booked through Starbooked directly.