The oldest known moe book was the Copyright and Legal Guide for Computer Users, published in September 2002.
In Moeru Eitango Moetan, published in November 2003, full visual was added.
English words examples are heavily inspired by ACG, resulting in over 200,000 books sold.
Later, Shuwa System, Eagle Publishing joined the moe book business.
In February 2006, Enterbrain published Moeken, which explicitly targeted fans of moe.