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--
You didn't go to Yasohachi Bridge 
by yourself at the time, did you?
لم تذهبي إلى جسر ياسوهاتشي بمفردك حينها، صحيح؟
Aber du warst damals doch nicht allein
bei der Yasohachi-Brücke, oder?
La vez que fuiste al puente Yasohachi
fue acompañada, ¿no?
Cuando fuiste al puente Yasohachi
fue acompañada, ¿no?
Quand tu t’es rendue là-bas,
j’imagine que tu n’étais pas seule.
Dubito che quella sera tu sia andata da sola
al ponte Yasohachi, dico bene?
Você não foi na ponte Yasohachi
sozinha na época, certo?
Ты же тогда не одна
ходила на мост Ясохати?