Copyright Information:

Some of the dictionary/reference material used in the site has been taken from publicly-available sources on the Internet.

Part of Japanese, Korean, Jlpt definitions are from KANJIDIC2 — property of the Electronic Dictionary Research and Development Group, used in conformance with the Group’s licence. Donate to the WWWJDIC project.
Part of Vietnamese meaning definition are from Tự Điển Hán Việt Thiều Chửu.
Part of Japanese dictionaries are from Yahoo! Japan and Baamboo
Some detail Japanese grammars are from
Reading material used from 日本語読解学習支援システム
Stroke order diagrams licensed from Kanji Cafe.
Romaji converter used from MauveCloud's
Audio provided by
Sentences used from Tanaka Corpus
Chat application. Powered by phpFreeChat