Blog
Interesting stories about psychology, self-improvement, and games
Psychology for Perfect Dating: What is your love style?
A detailed guide exploring modern dating trends along with attachment theory, a fundamental psychological concept. Dive deep into various psychological factors like anxious, avoidant, and secure attachment styles to find your perfect match.
5 min readEverything About Reaction Speed: What Grade Is Your Reflex?
From the science of reaction time to averages, grading, and influencing factors. Discover the reflex secrets of pro gamers and athletes, plus tips to improve.
4 min readFrom Gemini to Claude Code: Switching My AI Tool
After Gemini kept ignoring my project guidelines, I switched to Claude Code. Subagent architecture stabilized context management, and Slack notifications improved my workflow. The only downside: cost.
7 min readThe Science of Brain Training: How Games Awaken Your Mind
From neuroplasticity principles to training focus, memory, and mental math. Discover scientifically backed brain training methods and effective habits.
5 min readDigital Mindfulness: Starting Self-Understanding with Psychological Tests
Discover how mindfulness and psychological tests can deepen self-understanding amid modern stress. Learn practical digital wellbeing tips and short refresh routines for everyday life.
4 min readYour Personality in Colors: Secrets of Color Psychology
Explore how colors like red, blue, green, and yellow influence personality and emotions through the lens of color psychology, and discover how to use colors in everyday life.
4 min readBuilding Chzzk Streaming Tools: Polls, Raffles, and a Promotion Attempt
An idea sparked by watching Chzzk streams. The story of building chat-integrated poll and raffle features, fixing the pain points of existing tools, and a promotion attempt that quietly fizzled out.
8 min readMigrating to Cloudflare R2: Moving Images Out of the Codebase
How the repository ballooned with images committed to code, why Cloudflare R2 was chosen, bulk migration with a script, and two unexpected issues — a local dev domain problem and a CORS cache bug — honestly documented.
7 min readThe Hidden Psychology Behind Personality Tests
Discover the psychological theories behind personality tests, from self-report inventories to projective tests, and learn how to make the most of everyday quizzes.
5 min readApplying for Google AdSense: Two Rejections and an Ongoing Challenge
I decided that advertising was the only realistic monetization path for a psychology test and mini-game service. Here's the honest story of applying for Google AdSense, getting rejected twice, and still working on a solution.
7 min readCode Refactoring: How I Fixed the Problem of Running Out of Tokens in 2 Hours
After building several mini-games, the code was a mess and AI tokens were running out in just 2 hours. I share my honest experience of refactoring — writing tests first, then separating shared logic the way a backend developer would.
8 min readMini-Game Dev Log: From Lunchtime Colleagues to a Ranking System
After watching colleagues spend their entire lunch break retrying a reflex test, I decided to build my own. Here's an honest account of the problems that came up as games multiplied, how I added a ranking system with Firebase, and why the UI ended up inconsistent across games.
8 min readBuilding an AI Test Creation Guide: How I Realized Documentation Is Infrastructure
Building psychology tests with AI meant inconsistent quality. I tried creating a guide document to fix it — but when I asked AI how to build the guide, it fired back a barrage of questions. Then switching Gemini models made the document suddenly work. I can only guess why, but I learned a lot.
8 min readCloudflare Pages Deployment Story: What Happened When a Backend Developer Tried Static Hosting for the First Time
A backend developer who only knew server-based deployment tried static hosting for the first time. From choosing Cloudflare Pages to image optimization, routing, OG tags, and 404 pages — here's how each issue revealed itself only after deployment.
8 min readBuilding Psychology Tests with AI: What I Learned Starting Without Any Structure
It started with "just make me one" — no structure, no rules. Results were skewed, each test had a different tone, images were inconsistent. But I kept going. Here's what I learned building psychology tests with AI.
8 min readThe Birth of Q-Fit: A Backend Developer Building a Side Project with AI
An honest account of how a Java/Kotlin backend developer built the psychology test platform Q-Fit using AI coding tools — from the initial spark to development challenges and future plans.
7 min read