When you wake up every morning, what do you do first? I usually check LINE on my smartphone. In the train for school, I often read the text messages on Twitter. After I get home, I cannot help touching my smartphone and I chat with my friends on LINE and Twitter by turns. To be honest, I feel tired from chatting on SNSs these days. Have you ever felt that SNS is such a bother? Japan has a lot of problem caused by SNSs, for example, bullying, leaking private information, and so on. I think SNS is not necessary for us.