Basilisk Season 1 Episode 22 The Haunted

With Kagero captive, Oboro issues a public challenge, seeking to draw Gennosuke out, desiring to face him one last time. She stops Tenzen at his cruel play, unwilling to bear the suffering of an enemy, and draws his wrath instead. But Gennosuke arrives to face Tenzen at last, forced to defend himself with his greatest weapon still sealed against him. A startling revelation rings out in the night.