kt millie seojae Co.,Ltd
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- Types of genre
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Cartoon
Immersive Content
Story
Other
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- Website
- https://www.millie.co.kr/
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- Location
- 16F, SeAH Tower 45 Yanghwa-ro, Mapo-gu, Seoul, Republic of Korea
Millie's Library Inc. (CEO Jaewook Jeong), founded in 2016, is Korea's leading subscription-based reading platform. It offers unlimited access to about 230,000 e-books—from bestsellers to new releases—plus webtoons, web novels, audiobooks, chat books, and object books, all for a flat monthly fee. Partnering with around 2,700 publishers, Millie strengthens its competitiveness through in-house Millie Original IPs and secondary content. Beyond B2C, it has grown via B2B and B2B2C channels such as telecom bundling, completing partnerships with all three major Korean carriers (KT, LG U+, SKT). As the No.1 player with about 61.8% share in the e-book subscription market, Millie was listed on the KOSDAQ in 2023. In 2025, it launched "Millie Story" for unlimited web novels and webtoons, and "Millie Place" to expand reading offline, evolving into a comprehensive online-offline content platform.
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Business Description
Since its establishment in 2016, Millie's Library launched a monthly subscription service in 2017 and an unlimited service in 2018 by removing book-count limits. In 2019, it won the Grand Prize at the Effie Awards Korea and the Minister of SMEs and Startups Award, launched "Chat Book"—the world's first chat-style reading content—and was named a first-generation "Innovation Icon" by the Korea Credit Guarantee Fund. In 2020, it developed its proprietary "Completion Index," and in 2021 became the industry's first to adopt content-specialized AI voice, earning Google Play's "App of the Year." In 2023, it launched the video-based "Object Book" and the creation platform "Millie Road," and was listed on the KOSDAQ. In 2024, it introduced an AI persona chatbot and smart keyword service, and signed a stage adaptation deal for its original IP. In 2025, it produced the audio drama "Omniscient Reader's Viewpoint" and launched "Millie Story" and "Millie Place."