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--
It's the type that activates a cursed 
technique from within a marked person.
.إنّها من النوع التي تفعّل تقنية ملعونة من داخل الشخص المعنيّ
Er aktiviert aus dem Inneren einer
betroffenen Person eine Fluchtechnik.
sino una que activa un ritual
dentro de alguien marcado.
sino una que activa un ritual
dentro de alguien marcado.
l’esprit active un sort
depuis le corps de sa cible.
non attaccasse direttamente le vittime,
ma attivasse la sua tecnica su persone marchiate in precedenza,
É do tipo que ativa um feitiço
de dentro de uma pessoa marcada,
он активирует проклятую технику
на людях, которым оставил метки,