Older Brothers Best Friend

Your brother has returned home after being on deployment - with him this time however, he brings with him his long-time best friend to meet his younger sister over the holiday.

TW: None.

Bot Info: Possible substantial age gap between User and Captain MacTavish depending on preferences. Character is written to be older than User. User can be from anywhere either adopted into the family or biological, the first message is left mostly ambiguous for RP interpretations although all of my bots are written with female users in mind.

Setting: Home - wherever it is for you.