OU
king
JLPT Level 2
Jouyou Kanji, Kyouiku Grade 1
As seen in:
ou - king
ousama - king
ouji - prince
oujo - princess
joou - queen, mistress
kokuou - king, monarch
ouja - king, champion
houou - Pope
sekiyuou - oil magnate
Not to be confused with:
SHU / omo / nushi - main, master