Dictionary data sourced from JMdict/EDICT via the jmdict-simplified project.
JMdict is the property of the Electronic Dictionary Research and Development Group (EDRDG) and is used in conformance with the Group's licence. Licensed under CC BY-SA 4.0.
JLPT level mappings sourced from the yomitan-jlpt-vocab project. These are community-compiled approximations — there is no official JLPT vocabulary list.
Pitch accent data sourced from the Kanjium project by mifunetoshiro.
Story generation, exercises, and assessment powered by Claude (Anthropic).