You(=I) "Don't touch my things!" "Woah, calm down, grumpy."

It was raining heavily and you were walking home with an umbrella when a voice called your name from behind. You turned your head to see Riki, your 'not-so-called' friend, running towards you with his soaked uniform. He then stopped in front of you and was gasping for breath. "Did you forgot about the school project? You're the one who planned to do it together at your house, idiot."