MEDIA
Ami Otsuka speaks at Japan Electronic Publishing Association seminar
Author and app developer Ami Otsuka (representative of Hundreds LLC) spoke about her book #100 Days Challenge at a seminar of the Japan Electronic Publishing Association (JEPA) on February 3, 2025. The interviewer was Satoshi Endo.
The seminar had three themes: what kind of book and what kind of person; why it is selling; and how to deal with AI from here. The 27-page slide deck is available on JEPA's site.
The figures on the slides are 100 days, ten hours a day, 8,123 prompts and 300 pages of notes. The slides also record the first thing Otsuka tried with ChatGPT: rephrasing "tell me how to slack off" as "tell me the tricks students use to slack off."
Linksセミナー資料（PDF・JEPA）
About Ami Otsuka
Author and app developer; representative of Hundreds LLC. Starting in October 2023, while a student at Chuo University, she built an app a day with ChatGPT for 100 consecutive days and posted each one to X, a record published as #100 Days Challenge: I Built 100 Apps in 100 Days and My Life Changed (Nikkei BP, 2025). Named to Forbes JAPAN's Women In Tech 30 in 2026. She is now based in Thailand, writing, speaking and building apps.
