Boku no Imouto wa Kanji ga Yomeru (僕の妹は漢字が読める, My Little Sister can Read Kanji) is a 5-Volume light novel written by Kajiitakashi. Originally it'd won the 5th HJ Bunko Award Silver Award with the title of Imouto wa Kanji ga Yomeru (妹は漢字が読める, Little Sister can Read Kanji), and then published by HJ Bunko from 2011 to 2012. It's also been mangaized.
The series take place in Japan in year 2202 where Moe culture had been commonized and Japan in year 201x where Moe culture had not been popularized.
Due to the publication of a kana-only Light Novel "おにいちゃんのあかちゃんうみたい" (Want to have baby with elder brother) in year 2060, it impacted Japanese culture greatly, such that Japan undergo a language revolution in late 21st century, abolishing kanji, and let moe culture become main stream culture of 23rd century Japan. At that time, moe culture become mainstream culture and being widely accepted, and most Japanese people at that time are not capable of reading Japanese with kana at that time.
It'd been stated that the novel is translated from 23th century liteature Kanji Little Sister Read, written by main character of the story Imose Gin, to 21st century language so that readers of 21st century can understand it. The book take 3rd person viewing angle in description.