Sound! Euphonium (2015)

S1E20 Dad's Back

Kurt, a rock musician and the twins' dad, arrives at the Tipton Hotel for a visit. He grants Zack and Cody the freedom to do things their mother, Carey, would never allow. When Zack gets into a heated argument with Carey over his homework, he makes the impulsive decision to leave the Tipton by hiding himself in his father's tour bus.