Three men have died under similar circumstances from a cursed spirit. Investigators discover the victims all attended the same middle school, so Itadori, Fushiguro, and Kugisaki are dispatched to investigate. Once they arrive, they learn it was Fushiguro's old middle school. There they learn that the victims were all found unconscious beneath Yasohachi Bridge, a local haunted location. They also learn that Fushiguro's older sister, Tsumiki, is caught up in this incident as well--
We found that all three attended 
the same middle school for two years.
.ووجدنا أنّهم جميعًا ارتادوا نفس الإعدادية لسنتين
Offenbar waren alle drei zwei Jahre lang
gemeinsam auf derselben Mittelschule.
Les victimes ont fréquenté
le même collège pendant deux ans.
Ed è saltato fuori che per due anni
hanno frequentato la stessa scuola media.
Descobrimos que os três frequentaram
a mesma escola secundária por dois anos.
И узнали, что все трое два года
учились в одной средней школе.