A Japanese suffix added to a name (preferably to a male's name). It is used for friends, and possibly the men that you fancy.

a suffix attached to the surname of younger men or the same age as the speaker.
it isn't used between women or addressing superiors however a man can address a inferior woman by ~kun (in schools or companies)
it is less polie than ~san.

A suffix attached to names in Japanese.
Using it shows an informal relationship between speaker and listener.

Used with person's first name

Sergio Aguero.

term or name referring to a stylish asian

Kun means just kidding. A very common term used amongst teens.

my friend(Japan)