Neru, also known as z'5 and Oshiire-P (押入れP), is a producer whose works are mainly rock, heavy metal, or EDM. He mainly uses Len and Rin, though he also uses IA, GUMI, Miku, and MAYU. His music and lyrics often speak to people and allow them to see another unique view of the world. In many cases, the lyrics to his songs are somewhat dark.