Which play will be circled by sand sculpture?

"I am a mobile phone" can be described as a Japanese drama from sand sculpture on 20 18. This drama tells the story of a group of male high school students who want to be bad teenagers. The unique blood of the second-grade teenagers and the sand sculpture plot make you feel young, but at the same time, you can't help but feel: "They are really abnormal", which is also very funny and helpful to brothers.