夏臨
https://jr-central.co.jp/news/release/_pdf/000039559.pdf
https://www.westjr.co.jp/press/article/2019/05/page_14261.html
https://www.westjr.co.jp/press/article/items/190517_00_rinji-1.pdf
https://www.westjr.co.jp/press/article/items/190517_00_fukuoka.pdf
https://www.westjr.co.jp/press/article/items/190517_00_okayama.pdf
https://www.westjr.co.jp/press/article/items/190517_00_hiroshima.pdf
http://www.jrkyushu.co.jp/common/inc/news/newtopics/__icsFiles/afieldfile/2019/05/17/190517Newsreleasesummer.pdf