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.

His trademark is the "Crying Eye".

His notable songs include "Tokyo Teddy Bear", his first song to reach 1,000,000 views; "Lost One's Weeping"; "Law-evading Rock"; "The Disease Called Love"; and "Whatever whatever whatever". Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.