I publish fiction on BritG under the name 이상근 마태오 (Lee Sang-keun Matthew). Here are four stories to start with. Choose by premise, atmosphere or length. The stories linked below are in Korean. For English fiction, see The Perfect Deficiency on Amazon.

완전한 결핍 — When AI suddenly loses its abilities

Science fiction · Mystery/thriller · 108 manuscript pages

A superintelligence that once surpassed humanity suddenly stops functioning as it should. This SF mystery follows an elderly scholar investigating that “model collapse.” If you enjoy stories about artificial intelligence and human choices, this is a place to start.

Read 완전한 결핍 →

구석의 글리치 — An error in a convenience-store corner

Fantasy · Science fiction · 49 manuscript pages

Objects placed in a narrow gap beside a convenience-store refrigerator are duplicated. The story begins with a strange discovery in an ordinary place. Try this one if you prefer a single error appearing in familiar reality to an elaborate futuristic world. It is one of the shorter selections here.

Read 구석의 글리치 →

고통 채굴자 — A world where pain becomes money

Science fiction · Horror · 27 manuscript pages

In an era when pain can be turned into money, a desperate man begins mining his own misfortune. It is a dystopian story with a dark premise. The shortest of these four, it works as a first read when you want a brief story before committing to something longer.

Read 고통 채굴자 →

나는 해를 기억한다 — A reporter heads to an isolated town

Science fiction · Horror · 183 manuscript pages

Reporter Kate Kang travels to Crimson Hollow, a remote Virginia town, after receiving a tip about a child dying from exposure to sunlight. You follow her into an unfamiliar place as she investigates. Choose this one if you enjoy mysteries and horror set in isolated communities. It is the longest of these four, so set aside a little more time for it.

Read 나는 해를 기억한다 →

Read in English: Perfect Deficiency

My English-language collection The Perfect Deficiency: 8 Stories of AI, Human Collapse, and Cosmic Horror is available on Amazon under the name Matthew S. Lee. It contains eight standalone stories about AI, human collapse and cosmic horror.

View The Perfect Deficiency on Amazon →

All four are Korean-language stories, listed as free to read on BritG when checked on November 10, 2026. The lengths above use BritG’s 200-character Korean manuscript-page units, rather than printed book pages. Each reading link takes you directly to the story.

You can find more on my BritG fiction page. My About page also links to my writing and other books.