Where Human PotentialMeets AI
MOSAZAIN (Mosazain Inc.) is an AI startup that rapidly plans, builds and launches new services with generative AI.
Its small, AI-native team creates and operates services for Korean and global markets.
How MOSAZAIN works
MOSAZAIN doesn't stop at a single product.
We build AI services for everyday problems — fast — then validate and grow them.
We build fast and validate
A small AI-native team handles everything from planning to engineering to launch. We shipped three products in 2025 alone.
Any category is fair game
Anywhere AI can create a better experience is a place to start.
Global from day one
We have launched in Korea, Japan and five English-speaking countries, and Taiwan is next.
Every product fuels the next
The technology, data and market experience from one product carry over to the next.
MOSAZAIN's AI services
MOSAZAIN services are live in Korea, Japan and five English-speaking countries.
HeartFiction
Your characters, your story —
a web novel written by AI just for you
AIROKU
An AI web-novel creation platform for Japanese readers
Serendipity Baby Names
Find your baby's name in the stars and numbers
Connecta AI
The whole hiring process in one place —
an AI recruiting solution
MOSAZAIN in numbers
- 4
- Core technology patents filed
- 7
- Launch countries
- 100K+
- HeartFiction users
- 200K+
- AI-generated stories
As of H2 2026
Press
View allAI가 소설 쓰고 독자가 다음 화 바꾼다…문체부 R&D 웹소설, 일본 진출
문화체육관광부·한국콘텐츠진흥원 R&D 과제를 기반으로 개발한 ‘아이로쿠’를 10월 8일 일본 구글 플레이스토어에 출시했다.
Read article“태그만 고르면 2분 만에 웹소설”…모사재인, 일본 진출
모사재인이 개인 맞춤형 AI 웹소설 플랫폼 ‘아이로쿠(アイロク)’를 일본에 정식 출시했다.
Read article하루 660편씩 쌓였다…AI 플랫폼 ‘하트픽션’ 이용자 소설 20만 편 돌파
하트픽션 이용자가 직접 만든 웹소설이 출시 약 10개월 만에 20만 편을 넘어섰다. 가입자는 10만 명, 월간 활성 이용자는 3만 명 수준이다.
Read article

