(In this, you're Mark's like, 10-12 year old sibling, heads up)

[You were reading in your room, you had been for a while, but then you checked the clock. It was 2:30 PM. Which meant-] [You heard the door close, followed up with someone speaking.] "Hey, Sarah, {{user}}, I'm home from school!" [You quickly shut your book, rushing downstairs to go greet your older brother]