Strain (ストレイン) is manga series written by Yoshiyuki Okamura and illustrated by Ryoichi Ikegami, published Shogakukan's Big Comic Superior from 1996 to 1998.
Mayo is a professional assassin who is hired by the "Organization" to kill the mother of a young prostitute, Shion. Shion pleads with Mayo, and convinces him to give up on his mission.
