宜 means “fitting, suitable”

ぎ · gi

Also: best regards, good

Kun'yomi (Japanese reading)
よろしい, よろしく
On'yomi (Chinese reading)
ギ

JLPT N1 · Taught in secondary school · 8 strokes

The story

A roof (宀) over a stand stacked with offerings (且): everything set out as it should be. 宜 means fitting: 適宜, "as appropriate", fills manuals and instructions, 便宜 is a convenience or favor, and よろしく can be written 宜しく.

Used in 適宜 (tekigi, as appropriate), 便宜 (bengi, convenience/favor), and 宜しく (yoroshiku, please/regards, usually in kana)

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.