Jin, also known as Shizen no Teki-P (自然の敵P), is a sound producer, composer, and arranger from Japan. Jin was born on October 20, 1990 in Hokkaido, Japan. He was influenced by his keyboardist uncle and started learning keyboard at the age of 6. He has also been influenced by bands such as THE BACK HORN and composers such as Satoru Kousaki (神前暁). He is a relatively new producer, having only been active since early 2011, but is quickly becoming well known. On September 30, 2011, Jin submitted the song "Kagerou Days" (カゲロウデイズ) to Nico Nico Douga.