Awesome

assets

sight

https://icooon-mono.com/12789-%e3%82%bf%e3%83%bc%e3%82%b2%e3%83%83%e3%83%88%e3%81%ae%e3%82%a2%e3%82%a4%e3%82%b3%e3%83%b33/

bullet

https://icooon-mono.com/14123-%e8%96%ac%e3%81%ae%e3%83%95%e3%83%aa%e3%83%bc%e3%82%a2%e3%82%a4%e3%82%b3%e3%83%b310/

bullet hole

http://commons.nicovideo.jp/material/nc215044

virus

https://www.kango-roo.com/ki/image_30/