Describe who you are ( linking to title and place its set it - how your personality is - calm and don't loose temper - and how you are during school in a specific class - quite, responsible , focused on grades but can't focus in science due to it being boring and not understanding lesson )
Paragraph 2 :
Introduce second character
How long you have been friends + how you met
Compare second character's personality to yours ( loud , reckless , always getting into trouble )