2022年3月より Nikon D3300で、写真撮影を始める。同年11月より、本格的に映像作品の制作にとりかかり、2023年3月に初めて作品をYouTubeで公開。その翌月に Sony α7iv を購入し、メイン機とする。同年6月には、Mixing Engineer 「ALOHA」とタッグを組み、YouTubeアカウント「New Error」を開設。自主制作の作品は同アカウントで公開し、その他依頼制作も複数件行う。

Koju Miyoshi started taking photos with Nikon D3300 in March 2022. In November of the same year, he started shooting and editing videos, and the work was uploaded for the first time on YouTube in March 2023. The following month, he purchased a camera: Sony α7iv as his main device. In June of the same year, he teamed up with Mixing Engineer "ALOHA" and opened a new YouTube account. It is “New Error”. Self-produced works are posted on the account. New Error also makes several requested works.