https://ohisashiburiblog.wordpress.com/2017/08/24/stating-personal-opinions-and-remarks-with-%e3%80%8c%ef%bd%9e%e3%81%a8%e3%80%80%e6%80%9d%e3%81%84%e3%81%be%e3%81%99%e3%80%82-%e3%80%8d/