Yuji Itadori is an expert at track and field. But he has zero interest running around in circles, he's happy as a clam in the Occult Research Club. Although he's only in the club for kicks, things get serious when a real spirit shows up at school!

   When his grandfather is on his deathbed, Yuji makes a promise to him; that he will do kind deeds so that he dies surrounded by loved ones, unlike his grandfather.