Charcoal Filter

Charcoal Filter (チャコールフィルター), also known as Charcofil or Chakofiru (チャコフィル) to their fans, is a Japanese male rock band. Its members are Takahiro Konagawa, Yuzo Otsuka, Yuki Yasui, and Shintaro Takano. They met each other and formed Charcoal Filter in their high school days. After graduation from high school, they came out with the song "I start again" in 1999.