"Tsugunai" (つぐない; meaning "atonement" or "expiation"), is a song recorded by Taiwanese singer Teresa Teng. The original Japanese version was released on
Shin-ichiro Miki (Japanese); Michael Adamthwaite (English) Man in Black (黒づくめの男) Voiced by: Junpei Takiguchi (Japanese); Trevor Devall (English) Kurozuka
Archived from the original on July 22, 2010. Retrieved May 27, 2014. "異例づくめ!現役女子中学生2人組「ClariS(クラリス)」が『俺の妹が…』OP曲でデビュー" (in Japanese). Biglobe. September