Komi Can't Communicate - nothing wrong here

Title Box: The Tadano Siblings Are Very Close!
Parents: "Mom and dad are going to be away, so watch the house while we’re gone until tomorrow, ok?"
Hitohito: "Have a safe trip."
Hitomi: "Have fun on your trip!"
Parents: "Don’t fight, and don’t just play around all day just cause you’re on vacation, alright?"
Both kids: "Okay!"