Stone Ocean - Chapter 67
Jolyne realizes that the fight in the Ultra Security House Unit is already over and all the prisoners (besides two of them staring at her) were killed by a Stand user, having the appearance of being drowned. One of the two other prisoners, an old man, exalts Jolyne's determination and valor for fighting so many enemies. He introduces himself as Kenzou, a 78-year-old man in perfect health who always sleeps eight and a half hours per day and does urine therapy.
Impatient, Jolyne challenges him with vulgar gestures in American, French, Naples and Japanese style. Kenzou, undeterred, tells her he was the one who drowned the prisoners, and that there is one more person he must kill before Jolyne. This last person is revealed to be Foo Fighters, who was hiding inside one of the prisoner's bloated bodies in an attempt to preemptively kill Kenzou.
Kenzou remains unaffected by F.F.'s bullets, and F.F. tells Jolyne she will heal her wounds after they finish off Kenzou. Jolyne is surprised to see Anasui approach, recognizing him from Emporio's ghost room. F.F. continues her battle with Kenzou, but all her attacks are useless against the enemy, who appears to be using his Stand to predict their movements. Kenzou then counterattacks F.F. with a punch that starts to 'drown' her.