Beyond Blogs, Instagram, and YouTube: The Era of 'Voice'! How to Succeed in the Expanding Audio Business Market from an Author Who Generated 10 Million Yen

Against the backdrop of rapid growth in the audio business market, 'The Textbook for Earning 100,000 Yen a Month on stand.fm' by Karin Igarashi, who achieved annual revenues exceeding 10 million yen via a smartphone, was released on May 26, 2026.
新製品NQ 83/100出典：PR Times

📋 Article Processing Timeline

  • 📰 Published: May 26, 2026 at 19:00
  • 🔍 Collected: May 26, 2026 at 10:31
  • 🤖 AI Analyzed: May 27, 2026 at 13:46 (27h 14m after Collected)
Individual information media has evolved from blogs to SNS (Instagram) and video (YouTube). Now, 'audio streaming' is the next big wave. As the audio business market grows rapidly, Karin Igarashi, an author who built a business with over 10 million yen in annual revenue using audio streaming on a single smartphone without showing her face, has compiled her know-how into a book for the first time.

◆The Rapidly Expanding Audio Business Market: Why 'Voice' is in Demand
The domestic audio advertising market in Japan grew from 1 billion yen in 2019 to 3.8 billion yen in 2025—a 380% growth in just six years. While visual platforms like YouTube and TikTok are becoming saturated, 'audio streaming' has significant potential as it naturally fits into everyday spare time, such as during housework, childcare, or commuting.

◆Opportunity to Start Now! The Appeal of Audio Streaming
The audio content market is often compared to the 'early days of YouTube.' With few rivals, there is a chance to monopolize early-mover advantages. No editing is required; all you need is a smartphone. You can start anytime, even while commuting or walking, with recordings taking only 15–20 minutes.

Furthermore, voice naturally conveys 'personality.' In reality, even with fewer followers than other SNS, audio streaming is said to have overwhelmingly higher participation rates in seminars and conversion rates.

◆Know-How Released by an Author Who Achieved Over 10 Million Yen
Author Karin Igarashi went independent in 2024 after working at Daikin Industries and Panasonic. She used the audio platform 'stand.fm' to generate over 10 million yen in annual revenue. This book is packed with practical know-how that only someone who has achieved these results can share.

■Book Information
Title: The Textbook for Earning 100,000 Yen a Month on stand.fm
Author: Karin Igarashi
Release Date: May 26, 2026
Publisher: Pal Publishing
Price: 1,600 yen + tax

FAQ

How is the voice streaming market growing?

The domestic voice advertising market was 1 billion yen in 2019 but is expected to reach 3.8 billion yen in 2025, achieving a 380% growth over just 6 years.

What is Kasarin Igarashi's main career history?

She worked for Daikin Industries and Panasonic for a total of 17 years and became independent in 2024. She currently runs consulting for women's work styles and SNS content creation courses.

What methods are introduced in 'How to Earn 100,000 Yen per Month with Voice Streaming: The Stand.fm Side Hustle Guide'?

The book introduces methods to increase followers without DMs or advertising costs, monetization procedures through voice streaming, AI-based content creation techniques, and speaking techniques to engage fans.

What are the business advantages of voice streaming?

Voice streaming allows for easier transmission of personality and reduces the distance between the speaker and the audience. Even with a small number of followers, participation rates in seminars and purchase rates are high.

Please provide the basic information (title, price, release date) of this book.

The title is 'How to Earn 100,000 Yen per Month with Voice Streaming: The Stand.fm Side Hustle Guide', the release date is May 26, 2026, and the price is 1,600 yen (excluding tax).

Back to Newsroom (4)