Kokou no Akashi (孤高の証), roughly translated as "Lone Testament", is one of the songs created by Project Rin that is currently a web-only release. It is one of many jackpot melodies found in SanThree's CR Sengoku Musou. Kokou no Akashi is one of the original songs made specifically for the pachinko machine and is treated as its major theme in promotional media.