クン, きみ, ぎみ, み
mister, you, ruler, male name suffix
JLPT3 G3 S7 F947
As per 尹# (ruler who brings heaven and earth into harmony) + 口 mouth → ruler whose commands create a harmonious group. The meaning *you* originally was with respect to social superiors, but in modern Japanese is used toward social equals or subordinates.
[Full Kanji Etymology List]