6月1日は電波の日です。こちらは電波の日を祝い、電波資源の有効活用と不法電波の撲滅をうったえる月島瑠璃子さんです

June 1st is Radio Day. To celebrate Radio Day, we have Tsukishima Ruriko, who advocates for the effective application of radio frequency bands and the eradication of unlicensed broadcasting.
All in reference to Japan's Ministry of Internal Affairs' Radio Department mission statement: https://www.soumu.go.jp/menu_news/s-news/01kiban17_02000039.html.