sentences:  However, despite his attempts to ensure privacy by turning Professor X away when he came to recruit Logan to join the X-Men, Logan's attempts to suppress Daken's darker instincts failed when Sabretooth found them, revealing the truth about his father's past to Daken.Leaving his father, Daken became a brutal killer, roaming various cities and killing his opponents, proclaiming that Logan made him what he is by denying him his heritage.Concluding that he will never bring anything good into the world, Logan stabs Daken in the heart with the Muramasa Blade, subsequently impaling himself to end his own dark stain on the world.