スターダストクルセイダース
In October 2015, at the "Last Crusaders" event for "Stardust Crusaders", of the fourth part of the manga, "Diamond Is Unbreakable", was announced. It premiered on April 1, 2016 and ended on December 23, 2016. An original video animation (OVA) adapting the "Thus Spoke Rohan Kishibe" manga spin-offs to people who had purchased all thirteen Japanese DVD or Blu-ray volumes of the "Diamond Is Unbreakable" anime series.