Ichigyou-P 's 4th VOCALOID work and the one who gave him his Producer "nickname". This is the first Kagamine duet song to have reached 1 million views in Nico Nico Douga, the second being 'trick and treat' by OSTER project. This is a fun, upbeat rap song uploaded 4 months after the Kagamines' release, where they both sing about supplanting Miku as #1; which became the unofficial anthem of hardcore Kagamine fans for a long time. The song title comes from the Japanese term Gekokujou/Gekokujō, which has been translated as the lower rules the higher or the low overcomes the high.