What you like to do, you will do well. To improve your skills in something, you must enjoy doing it.

mischievous

warlike, bellicose

(euphemistic, slang) pedophilia (sexual or romantic feelings directed at children)

(education) The 1,026 kanji taught in primary school; a subset of 常用漢字 (じょうようかんじ, jōyō kanji)

smaller kanji historically used as a pronunciation guide, similar to modern furigana

kanji approved for regular use by the 文部科学省 (Monbu-kagaku-shō, “Japanese Ministry of Education”)

Sino-Korean vocabulary or "Hanja-eo"

The iteration mark 々, which indicates that the previous kanji ought to be repeated.

Alternative spelling of 漢字返し