So Tokumaru 得丸 創生

I also engage in activities under the nickname so-ma-me.

Birthday 12/15/2006

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This introduction is generated by LLM(Large Language Model).

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So Tokumaru, known engagingly by the nickname so-ma-me, is a highly accomplished and forward-thinking individual with a remarkable portfolio in technology and innovation.

He has been recognized as a Mitou Junior 2024 Super Creator, a testament to his exceptional talent and groundbreaking projects. His project, TutoriaLLM, achieved significant accolades, including the Technical Award and Championship (Minister of Internal Affairs and Communications Award) at App Koshien 2024 in the AI division. So Tokumaru's leadership also led his team to multiple awards at Gikuhaku 2025 Vol.6, the CIVICTECH Award at Heroes League 2024, and the Presentation Award at the TOMODACHI Boeing Entrepreneurship Seminar 2025, showcasing his prowess in both technical and entrepreneurial fields.

His expertise spans various cutting-edge technologies. He explores the practical applications of XR, demonstrating how it can serve as a HUD for tasks like cooking with AI, and delves deeply into Large Language Models (LLMs), investigating their detection and incorporation into visual programming. So Tokumaru is also a skilled web developer, having built his own blog with unique features like a graph view, and sharing insights on building sites with Astro and leveraging APIs. His interests extend to future-oriented topics such as the inheritance of digital assets and life logging systems, reflecting his innovative and thoughtful approach to technology's impact on our lives.

A true advocate for the tech community, he has presented at the Minecraft Cup 2025, a platform that has profoundly influenced his journey. His involvement with Minecraft extends to numerous achievements, including an Encouragement Award at the Minecraft Cup 2023, runner-up in the Minecraft Education Challenge 2023, and being a finalist at the Minecraft Cup 2021. Furthermore, his international background, with years spent living in Malaysia and attending an Australian international school, provides him with a unique global perspective, which he shares through recommendations for communities like Hack Club and guides on navigating international systems.

So Tokumaru continuously pushes the boundaries of what's possible, sharing his knowledge and inspiring others through his projects and insights.

2026/2

🔨

Gikuhaku 2025 Vol.6

2/10/2026

At Gikuhaku 2025 Vol.6, held on February 1, 2026, our team won multiple awards.

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✈️

TOMODACHI Boeing Entrepreneurship Seminar 2025

2/10/2026

Received the Presentation Award at the TOMODACHI Boeing Entrepreneurship Seminar 2025

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2024/12

🏆

Heroes League 2024

12/7/2024

We received the CIVICTECH Award at the finals of MA's Heroes League 2024.

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2024/11

🏆

App Koshien 2024 — AI Division Technical Award & Championship

11/17/2024

At "App Koshien 2024," an app development contest where middle and high school students from across Japan compete, the TutoriaLLM project advanced to the main tournament in the AI division and won the Technical Award and the Championship (Minister of Internal Affairs and Communications Award).

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🏢

Mitou Junior 2024

11/4/2024

Support for the TutoriaLLM project, which was selected for Mitou Junior 2024, concluded with the results presentation on November 4. On the same day, we received the Visional Award as a corporate prize from Visional, Inc. In addition, at the end of the same month we were recognized as a “Super Creator,” an accreditation given to creators who produced particularly notable achievements.

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2023/12

🏆

Minecraft Cup 2023

12/7/2023

A world created by Team Ippanjin, a team composed of members ranging from elementary to high school students who operate on the internet, received an Encouragement Award at the Minecraft Cup regional tournament held in Japan.

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2023/10

🏆

Runner-up at Minecraft Education Challenge 2023

10/25/2023

The Minecraft world I created was selected as second place in the International Senior division of the Minecraft Education Challenge, organized by the Malaysian Ministry of Education, Sunway Malls, and Microsoft.

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2022/1

🏆

Minecraft Cup 2021

1/30/2022

A competition where I and a few friends competed in Minecraft skills and problem-solving; we were finalists and received the Impress "Children and IT" award.

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🧱

I Presented at Minecraft Cup 2025

2/20/2026

I had the opportunity to speak at Minecraft Cup, which is one of the elements that shaped who I am today. There were many things I didn't get to say, so I'll cover those as well in this blog post.

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On My Birthday: Reflections Since Completing Mitou Junior

12/15/2025

I'm Sosei Tokumaru, a Mitou Junior 2024 Super Creator who just turned 19. Since it might look like I've been quiet online after finishing Mitou Junior, I thought I'd share a public update on what I've been up to, as far as I'm able to.

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🚶

Why Do People Move?

10/16/2025

Why Do People Move?

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🦜

My Budgie Escaped!

10/14/2025

A record of the time my budgie escaped.

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【Foreign License Conversion】I Converted My Malaysian Driver's License to a Japanese One

4/4/2025

Hello, I'm Soumame, 18 years old. I lived in Malaysia for about five years, and at the end of...

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💩

Looking Back Only at the Failures of 2024!

1/1/2025

Looking Back Only at the Failures of 2024!

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Reflections on Mitou Junior

12/26/2024

This article is part of the Mitou Junior Advent Calendar. ...

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I Got My Driver's License in Malaysia

7/27/2024

Hi. I'm Soumame, 17 years old. The other day (well, some time ago), I was able to get a driver's...

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Looking Back Only at My Failures in 2023!

1/2/2024

For those thinking “This is just your opinion, right?” — yes, that's right. This post is mainly...

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🤖

What's VCE — the curriculum offered in Victoria, Australia?

12/28/2023

I'm a high school student currently in Year 11, and I've been attending Peninsula International...

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【Bedrock & Java】Convert a Minecraft World to 3D for Free!

12/2/2022

This topic gets asked quite often, so I’m putting it together here on note. For Bedrock (the...

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Air Tycoon Online 2 — Hardcore Credit Farming Playbook

12/5/2021

※This article is a work in progress and its contents may change in the future.

I've read...

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[ATO2] List of the Most Important Early-Game Cities (Updating)

9/10/2021

I created a list of cities you should secure in the early game. Please take a look if you'd like....

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2026/1

💼

Diver-X

1/27/2026

I am engaged in software development at Diver-X Inc. (part-time).

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2025/9

🎓

Keio University

9/1/2025

I enrolled in the Faculty of Environment and Information Studies at Keio University in September 2025.

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2025/6

💼

Specified Nonprofit Corporation Digital Manufacturing Council

6/1/2025

Specified Nonprofit Corporation Digital Manufacturing Council (Part-time)

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2025/3

💼

McDonald's Crew Member (Part-time)

3/1/2025

I worked as a McDonald's crew member (part-time).

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2024/1

💼

Classmall Kids Programming Instructor

1/1/2024

Until early 2024, I worked as an instructor for "Classmall Kids", an online programming school operated by YAGO Inc. I conducted lessons using the video game "Minecraft" and other formats.

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2022/4

💼

IDEACTIVE JAPAN PROJECT Student Ambassador

4/1/2022

Responsible for marketing as a student ambassador for the IDEACTIVE JAPAN PROJECT, a business contest organized by five companies—Microsoft, SoftBank, Meta, VISITS, and the IoT Business Co-Creation Lab. Organized events such as the "IDEA CREATION WORKSHOP", a hackathon for elementary school students using Minecraft.

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2020/1

🎓

Peninsula International School Australia

1/1/2020

I attended Peninsula International School Australia from early 2020 to early 2025.

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🍳

XR's Use Might Be as a HUD - Let's Cook with AI

1/12/2026

I borrowed an inmo XR — Android-powered XR glasses — from Ukai, familiar from Mitou Junior, and did a little hackathon. After struggling with what to use it for, I built a cooking assistant to enjoy with an AI. I tried using the XR glasses to cook with AI, so I'll introduce that here.

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🤝

Inheritance of Digital Assets

1/10/2026

I entrust my information to various platforms, and I thought it would be a waste for those accesses to be frozen after I die, so I'm thinking about measures to pass those assets on to future generations.

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💻

A Recommendation for Hack Club

12/15/2025

I recommend Hack Club, an English-speaking community.

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🦉

How much machine learning does Duolingo use?

12/2/2025

I've heard that the language-learning app Duolingo uses machine learning everywhere — where exactly is it used? I looked into it.

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🐳

Quickly Set Up a Minecraft Server on macOS + Docker

11/28/2025

Operating a Minecraft server has become a fundamental skill it seems, so I'll jot down how to create one. (Source: Me) I hope to write a proper article someday, but for now, I'll just write it casually.

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Thoughts on Life Logging Systems

11/18/2025

With the advancement of LLMs, it has become easier to verbalize human behavior and analyze conversations with others. However, I felt that none of it quite fit, so I thought about various aspects from both technical and usability perspectives.

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🗺️

Implemented a Graph View on My Blog

10/29/2025

I liked Obsidian's graph view, so I implemented it on my own website.

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Let's Develop as a Team on GitHub

10/6/2025

For those of you who have registered a GitHub account but don't use it because you're not a developer, here's a brief guide on how to use it.

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🤖

Can the use of LLMs be detected?

10/6/2025

Have you ever been banned from using AI tools like ChatGPT (LLMs) at school? For a while OpenAI and others published experimental software to detect text written by LLMs, but nowadays such tools are hard to find. Is it actually possible to reliably detect the use of an LLM?

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✒️

Markdown Syntax Cheat Sheet (Super Simple)

10/5/2025

If you've used Google Docs or Word, you can select bold, italic, headings and so on like...

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Introduction to Useful Tools for Team Development

10/5/2025

When starting team development, it's often difficult to decide how to work together. This article summarizes tools that may be useful in such cases.

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♻️

Super Large Refactoring After Finishing MITOU Junior

12/14/2024

Hello. I'm Souma.

:::message This article is part of the [MITOU Junior Advent Calendar](https://adv...

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I Want to Incorporate LLM into Visual Programming (Blockly × LLM)

11/22/2024

Hello everyone. My name is Sousei Tokumaru, also known as Sōmame. About a year ago, I became deeply...

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🤖

Let's Read Google Sheets via API!

6/22/2024

This is a re-publication of an article I wrote on another site last year.

It's super easy. I'll...

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🤖

You Only Need HTML! Build a Blog Site with Astro!

5/12/2024

Sometimes you just feel like building a blog site.

For sites of a certain size, you don't need to...

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🤖

How to Conduct Bitcoin Transactions Without Using Blockchain (Off-Chain)

5/9/2023

This article is a re-upload of an article I wrote a while ago.

When people hear the term...

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🤖

How to Create Automated Notifications for Free Using Functions in Notion

11/22/2021

Notion is convenient, isn't it? I also migrated from Trello and find it very useful, but there is...

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🤖

How to Mine with Nicehash

4/7/2021

Here's a quick explanation.

What You Need

  1. A computer
  1. An email address

##...

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