No Regrets Sound Producer/Lyrics: Kuo Yu Music/Arrangement: 倉田 涼Ryo Kurata Vocal: philoi Guitars: 倉田 涼Ryo Kurata MIX Engineer: 原 裕之Yasuyuki Hara Recording Engineer: 齊藤 和夫Kazuo Saito Production Assistant: 賀 湘竣Shoushun iwai