Articles
Introducing technical articles published on Qiita. Over 200 technical articles published on Qiita. These four articles are selected from over 200 technical posts, highlighting reproducible insights, real-world impact, and design-level thinking.
Lecture Materials & Workshops
Multiplying Quaternions in Unity
Lecture materials explaining attitude calculations using quaternions.
Unity Scene Size Reduction Study Sessions (4 parts)
Explains optimization using Unity built-in features for creators.
GitHub Hands-on (6 parts)
Introduces collaborative development with GitHub for creators.
Dockerfile Hands-on for Beginners
Lecture materials to help Docker beginners write Dockerfiles.
package.json Hands-on for Beginners
Lecture materials explaining package management in Node.js.
XR Articles
Technical Decision-Making That Bridges Engineers and Creators
Based on five years of hands-on experience with visual scripting in XR platforms where C# cannot be written directly. The article reframes technology choices through cognitive traits and project scale rather than personal preference, and ranked #1 on Qiita Trend in November 2025.
Design Thinking Across Unity and Unreal Engine
An engineer with 10 years of professional Unity experience explored Unreal Engine hands-on and organized the differences in terminology, structure, and design philosophy. The article examines engine-level differences through concepts such as encapsulation, polymorphism, and dependency inversion, and reached #1 on Qiita Trend in April 2025.
Unity ⇄ Unreal Engine Terminology Mapping & Origins
Explaining UE terminology through Unity equivalents and their origins.
Why Does AR Alignment Drift on Ships?
Causes of AR misalignment on moving vehicles and how to address them.
How I Managed the Unity Certified Programmer Exam in a Week
Study strategies used to prepare for the Unity certification in one week.
Let’s Write Unit Tests in Unity!
How to introduce unit tests and design test cases in Unity.
Why Large-Scale AR Occlusion Needs Meshes
Explaining why meshes are necessary for occlusion in large AR spaces.
Six Things I Did to Score Perfect on the VR Engineer Certification
Study methods that led to a perfect score on the VR Engineer exam.
Internal Design for Products with Complex State
Designed an Undo/Redo system for STYLY Studio, a feature known for its high implementation complexity, with a focus on both memory efficiency and performance. Starting from the Memento pattern, the article explains practical design decisions such as state-based diff management and grouping multiple changes into a single operation for real-world product use.
Web Articles
Practical Knowledge for Making New Technologies Stick
An attempt to introduce Swagger (OpenAPI) into a Word-centric workplace initially failed, but succeeded through revisiting tool choices, API design principles, and documentation culture. The article summarizes the process of failure, redesign, and long-term adoption, and reached #1 on Qiita Trend in October 2019.
Four Steps We Took to Normalize Markdown in a Word-First Workplace
How introducing Markdown reduced documentation effort.
Explaining Dependency Injection Through a “Fat Story”
A story-driven explanation of Dependency Injection (DI).