honorifics

[yakan]

Link. Link. Link. Will fix this up later.

You can call him Gon-chan. That's what he introduces himself with.

no honorific
this indicates you are VERY close to the person- be it romantically or otherwise- and can also be a form of disrespect

san
Mr.; Mrs.; Miss; Ms.

chan
suffix for familiar person. A cute honorific. This indicates friendship or being close to that person, and may even be used as a general honorific for young children.

kun
Mr (junior); master; boy
can also be used for girls

dono
form of address used for official letters and business letters, and in letters to inferiors; Mr.; Mrs.; Miss. A term of respect and a polite term.

sama
Mr.; Mrs.; Miss; Ms. Honorific or respectful (sonkeigo), after a person's name (or position, etc.)

danna/no-danna
master (of a house, shop, etc.)
sir; boss; master; governor; word used to address a male patron, customer, or person of high status
patron of a mistress, geisha, bar or nightclub hostess; sugar daddy

niisan/no-niisan
older brother; elder brother
brother (as older-brother figure in friendly and or work relationship)
(vocative) young man; buddy; fella; laddie