The Aura Beauty Coordinator Association (a general incorporated association) will hold the Osaka performance of "Oka Serizawa YouTube 300K Subscribers Special Event 2026," a fan appreciation event commemorating the YouTube channel of its representative director, Oka Serizawa, reaching 300,000 subscribers, on Saturday, September 5, 2026, at Nakanoshima LOVE CENTRAL in Osaka.
At this event, Serizawa will demonstrate the "Beauty Body Type Diagnosis" she developed for women in their 50s and 60s, known as "diagnosis hoppers." The Tokyo performance is already sold out, and expectations for the Osaka performance are rising.
The activities of Oka Serizawa, a 62-year-old senior beauty expert
Oka Serizawa is a beauty expert whose true-to-life figure of 157 cm, 63 kg and age 62 is supported by many mature women.
Her own YouTube channel, "Adult Youthful-Look Transformation Method – Oka," has grown to 320,000 subscribers and more than 120 million total views (as of July 2026). Osaka Prefecture has recorded about 5.5 million views over the past seven years, ranking first in Japan in YouTube views by prefecture, and is an area with high support for Serizawa.
After working for 20 years as a computer designer at a major manufacturer, Serizawa changed careers to the beauty industry at the age of 42.
Facing the worries of mature women who are "giving up on themselves because of their age," she established her own diagnosis method specialized for women in their 50s and 60s, the "Beauty Body Type Diagnosis."
YouTube channel "Adult Youthful-Look Transformation Method – Oka"
What is the original "Beauty Body Type Diagnosis"?
The "Beauty Body Type Diagnosis" was developed to answer the worry many mature women share: "I can't find clothes that suit me."
Focusing on concerns about body shape and texture that skeletal-frame diagnosis and personal color diagnosis alone could not solve, it aims to identify the clothing designs and materials that truly suit you.
The change that comes from knowing what "suits" you
At the Tokyo performance held on Sunday, July 19, 2026, two participants actually underwent the "Beauty Body Type Diagnosis" and showed their before-and-after looks in total coordinates based on the results.
Even participants who had been unsure about choosing clothes before the diagnosis were seen to change their impression greatly by choosing designs and materials that match their own body shape.
Participants who experienced the change shared comments such as "I'm 65, and I still want to enjoy life from now on!" and "I can gain confidence in myself and it seems I'll have fun every day."
In the survey of Tokyo attendees, satisfaction was 100% ("Very good" 94.6% / "Good" 5.4%).
During the event, Serizawa spoke to the audience, saying "Rather than humoring others, humor yourself" and "Believe in yourself rather than those around you," conveying the importance of ending years of putting up with things and using your energy for yourself.
From this, it can be considered that knowing what "suits" you leads not only to a change in appearance but also to nurturing self-esteem and supporting a way of living that does not give up on yourself.
Details and highlights of the Osaka performance
The Osaka performance, "Oka Serizawa YouTube 300K Subscribers Special Event 2026," will be held on Saturday, September 5, 2026, from 13:00 to 17:00 at Nakanoshima LOVE CENTRAL.
The event uses a ticket system by seat type with a capacity of about 80, but it is already sold out.
The following programs are planned as highlights.
From 13:00: Program for VIP participants (one-on-one individual diagnosis)
From 15:00: Main commemorative party (audience-participation live transformation demo)
In either program, you can see up close Serizawa's own demonstration of the "Beauty Body Type Diagnosis" and the accompanying before-and-after changes.
Profile of Oka Serizawa
Oka Serizawa, representative director of the Aura Beauty Coordinator Association (a general incorporated association), restarted at age 42 with no experience in the beauty industry. Over a career of more than 20 years, she has established methods for mature women and has drawn a large response on YouTube.
About the Aura Beauty Coordinator Association (general incorporated association)
The Aura Beauty Coordinator Association (a general incorporated association) operates under the concept of "the industry's first practical image consultant school for adults that you can learn online."
It offers certification courses in personal color diagnosis, Beauty Body Type Diagnosis, makeup advisor training, and hairstyle-that-suits-you diagnosis.
Aura Beauty Coordinator Association (general incorporated association) official site
