He's a male Virtual YouTuber who makes streams in English of various videogames, podcasts and (above all) educational videos about chemistry, specializing in electrochemistry where he builds non-standard apparatus (improvised equipment) to create different compounds. His activity on YouTube dates back to early 2010, but it was not until 2021 that he introduced the virtual characterization of himself under the name Neru. Most of his VStreams are through his gameplays (both on Youtube and Twitch) where he usually plays Apex Legends, Satisfactory and Gunz2 among other games. He also often uploads shorts of epic events in his gameplays, memes, reactions and songs. He is also responsible for the creation of various movements such as the Taeru Gang (later called The Taeru Army) and the Catboy Chemical Society (CCS).
In real life he is a chemical engineer. It is not entirely clear how he became a catboy, but many people believe that perhaps it was due to an accident while performing one of his experiments.