Hossy.org

About

Hossy.orgis a site where Tetsushi Hoshikawa (Hossy) shares information from his various experiences such as entrepreneurship, management, and graduation through blog articles, podcasts, and other activities.

Tetsushi Hoshikawa

Founded Trinity Corporation, which deals with digital life products, and “graduated” after about 20 years of management.

Serves concurrently as the CEO of Eureka Studio Corporation, a company planning and developing casual games for smartphones, and as the CEO of the investment company Cosmo Studio.

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Podcast

Real Management | The Real Story of a Scriptless CEO

Founded in 2006, Trinity Corporation has grown to become a leader in the smartphone accessories industry, with a business succession planned for 2025.
In the podcast “Real Management,” we candidly discuss 20 years of successes and failures.

[Released every Friday at 6 AM]

2026.06.12
Episode 59: The Reality of Trinity’s Unique Practices, Part 1: The Nickname System and Naming Rules
Explores Trinity’s corporate culture, where all employees address one another by nicknames, examining its drawbacks in external communications, its movie-inspired naming rules, and the background that shapes relationships and values.
2026.06.05
Episode 58 The Reality of Challenge and Failure: A Sense of Accomplishment Comes After Taking on the Challenge
Explores the relationship between challenge and meaningful defeat, delving into the originality that rarely emerges from safe choices, the traps veterans can fall into, and the reasons people take on difficult problems with no clear right answer.
2026.05.29
Episode 57: The Real Brand Story — weara AIR Edition — The Next-Generation Product That Never Materialized
Weara AIR, rendered a phantom after its release was cancelled, reveals the detailed behind-the-scenes of its development for B2B monitoring and transport-site use, designed to operate for two weeks on a cellular network connection.

Works

2025.05.04
Works
Restaurant Uokatsu | Nagatacho
Ryoriya Uokatsu | Nagatacho is a tranquil, authentic Japanese restaurant run by Yanagibashi Katsuhiko, who has distilled his experience in Ginza. Guests dine at an eight-seat counter and enjoy a menu centered on a single seasonal specialty.
- Cosmo Studio
- Investment
2025.05.01
Works
Eureka Studio Inc.
Eureka Studio became a wholly owned subsidiary of Trinity through an M&A on November 1, 2022, and is engaged in planning and developing hyper‑casual games for smartphones.
- Eureka Studio
- Game

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Blogs

2026.05.01
Blogs
One Year After Leaving Trinity, and What Stayed the Same
One year after leaving Trinity, the company built over 20 years. The mental task list stopped, the role shifted, but the drive to build something new never did.
2026.03.07
Blogs
Hay Fever at 50 and the Anniversary That Forced My Surrender
I recount my bewilderment at suddenly being hit by hay fever — nonstop runny nose and sneezing — and discovering that March 7 is “Kafunsho Kinenbi”, after believing for over fifty years that it would never affect me.
- Life
2026.02.24
Blogs
February 24 Is International I Hate Coriander Day. The Science Behind Why the Smell Is Unbearable
On February 24, cover International I Hate Coriander Day — a topic trending on English-language social media — and explore the roots, social background, and the origins and spread of dislike of Pakuchi.
- Food
- Life
2026.02.01
Blogs
How to Pay Cash-Only Convenience Store Bills Without Cash in Japan
A description of the creed of a cashless fundamentalist who rigorously avoids paying with cash, outlining the concrete practical conveniences and challenges of that approach, the tactics and adjustments used when relying on cashless payment methods, and the effects on everyday life.
- Digital Life
- Life
2026.01.28
Blogs
What Japan’s 2026 Election Is Really About: Real Wages, Not Just Tax Relief
This piece analyzes and reports on the key issues, the balance of power, and the outlook for winners and losers in the Dai 51-kai Shūgiin Giin Sōsenkyo, which was officially announced on January 27, 2026, with voting on February 8 — a contest for 465 seats with 1,285 candidates.
- Opinion
2026.01.17
Blogs
When a Business Podcast Pauses, and the Story Doesn’t Add Up
Summarizes and clarifies the reasons given for the hiatus of the podcast Keiei Chudoku, outlines discrepancies between Tokyo Roudoukyoku materials and media reports, highlights changes revealed by primary sources, and records the listener’s conflicted emotions.
- Podcast
- Opinion
- Real Management
2026.01.16
Blogs
Anger Management Isn’t About Eliminating Anger, and Here’s What I Learned
Anger Management Nyumon explains how clashes over “shoulds” produce anger and outlines control methods to avoid regret after anger arises, including applying the 6-second rule.
- Hossy
- Life
- Examination
2026.01.15
Blogs
Apple Creator Studio: A Long-Time Pixelmator Pro User’s Take on the New Subscription Era
Provides an overview of the Apple Creator Studio announcement, outlining the bundle composition (including Keynote and Pixelmator Pro), the relationship between retaining free features versus introducing paid additions, and the overall impact on existing users.
- Apple
- Digital Life
- Product

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About

Categories

One Year After Leaving Trinity, and What Stayed the Same

Hay Fever at 50 and the Anniversary That Forced My Surrender

February 24 Is International I Hate Coriander Day. The Science Behind Why the Smell Is Unbearable

How to Pay Cash-Only Convenience Store Bills Without Cash in Japan

What Japan’s 2026 Election Is Really About: Real Wages, Not Just Tax Relief

February 24 Is International I Hate Coriander Day. The Science Behind Why the Smell Is Unbearable

How to Pay Cash-Only Convenience Store Bills Without Cash in Japan

What Japan’s 2026 Election Is Really About: Real Wages, Not Just Tax Relief

About

Podcast

Episode 59: The Reality of Trinity’s Unique Practices, Part 1: The Nickname System and Naming Rules

Episode 58 The Reality of Challenge and Failure: A Sense of Accomplishment Comes After Taking on the Challenge

Episode 57: The Real Brand Story — weara AIR Edition — The Next-Generation Product That Never Materialized

Works

Restaurant Uokatsu | Nagatacho

Eureka Studio Inc.

Blogs

One Year After Leaving Trinity, and What Stayed the Same

Hay Fever at 50 and the Anniversary That Forced My Surrender

February 24 Is International I Hate Coriander Day. The Science Behind Why the Smell Is Unbearable

How to Pay Cash-Only Convenience Store Bills Without Cash in Japan

What Japan’s 2026 Election Is Really About: Real Wages, Not Just Tax Relief

When a Business Podcast Pauses, and the Story Doesn’t Add Up

Anger Management Isn’t About Eliminating Anger, and Here’s What I Learned

Apple Creator Studio: A Long-Time Pixelmator Pro User’s Take on the New Subscription Era

新着記事

Recent Posts

One Year After Leaving Trinity, and What Stayed the Same

Hay Fever at 50 and the Anniversary That Forced My Surrender

February 24 Is International I Hate Coriander Day. The Science Behind Why the Smell Is Unbearable

Categories

Tags

Official Social Media

Podcast

About

Categories

One Year After Leaving Trinity, and What Stayed the Same

Hay Fever at 50 and the Anniversary That Forced My Surrender

February 24 Is International I Hate Coriander Day. The Science Behind Why the Smell Is Unbearable

How to Pay Cash-Only Convenience Store Bills Without Cash in Japan

What Japan’s 2026 Election Is Really About: Real Wages, Not Just Tax Relief

February 24 Is International I Hate Coriander Day. The Science Behind Why the Smell Is Unbearable

How to Pay Cash-Only Convenience Store Bills Without Cash in Japan

What Japan’s 2026 Election Is Really About: Real Wages, Not Just Tax Relief

About

Podcast

Episode 59: The Reality of Trinity’s Unique Practices, Part 1: The Nickname System and Naming Rules

Episode 58 The Reality of Challenge and Failure: A Sense of Accomplishment Comes After Taking on the Challenge

Episode 57: The Real Brand Story — weara AIR Edition — The Next-Generation Product That Never Materialized

Works

Restaurant Uokatsu | Nagatacho

Eureka Studio Inc.

Blogs

One Year After Leaving Trinity, and What Stayed the Same

Hay Fever at 50 and the Anniversary That Forced My Surrender

February 24 Is International I Hate Coriander Day. The Science Behind Why the Smell Is Unbearable

How to Pay Cash-Only Convenience Store Bills Without Cash in Japan

What Japan’s 2026 Election Is Really About: Real Wages, Not Just Tax Relief

When a Business Podcast Pauses, and the Story Doesn’t Add Up

Anger Management Isn’t About Eliminating Anger, and Here’s What I Learned

Apple Creator Studio: A Long-Time Pixelmator Pro User’s Take on the New Subscription Era

新着記事

Recent Posts

One Year After Leaving Trinity, and What Stayed the Same

Hay Fever at 50 and the Anniversary That Forced My Surrender

February 24 Is International I Hate Coriander Day. The Science Behind Why the Smell Is Unbearable

人気記事

Trending Posts

Apple Creator Studio: A Long-Time Pixelmator Pro User’s Take on the New Subscription Era

What Japan’s 2026 Election Is Really About: Real Wages, Not Just Tax Relief

Anger Management Isn’t About Eliminating Anger, and Here’s What I Learned

Categories

Tags

Official Social Media

Podcast