The official website for the two-day anime special based on the third novel in the NisiOisin’s Owarimonogatari novels series announced on Saturday that musical duo ClariS will perform the ending theme song “SHIORI.”
The novel series’ “final season” ended with Zoku Owarimonogatari in September 2015, but it features a teaser for “Monogatari Series, Next Season Tsugimonogatari.”
The three-volume Owarimonogatari novel is part of the “final season” of the Monogatari series.
The website also announced that the special will run for two hours on both August 12 and August 13.