1x13 - Fist of the North Star: HOKUTO NO KEN

Fang Clan Chieftain discovers the whereabouts of Airi, the sister Rei has been searching for, and takes her hostage, using her as leverage to bend Rei to his will. When Rei finally reunites with his sister after so long, he is devastated by how much she has changed and loses control of himself. Watching Rei’s despair, Fang Clan Chieftain can barely contain his delight. Kenshiro tries desperately to calm Rei...but the situation spirals toward danger.