image source https://www.ac-illust.com/main/search_result.php?word=%E7%B5%B5%E6%96%87%E5%AD%97
image source http://sozaing.com/material/%E6%96%BD%E8%A8%AD%E3%82%A2%E3%82%A4%E3%82%B3%E3%83%B3-%E3%81%8A%E9%A3%9F%E4%BA%8B%E5%87%A61.html
image source http://blog.acworks.co.jp/2017/07/10/kaomoji/
