Jin’s informal and personal tone is reinforced by the use of the personal pronouns he and she my and i they and them his and theirs

Jin’s informal and personal tone is reinforced by the use of the personal pronouns my and I.

Informal and personal tone in a writing or speech is akin to a spoken conversation.  Informal writing may include slang, figures of speech, broken syntax, asides and the like.  Informal writing takes a personal tone as if you were speaking directly to your audience (the reader). You can use the first or third person point of view . In informal tone, words are likely to be simplified using contractions