The line belongs to Naoya Zenin, a proud and cruel member of the Zenin clan in Jujutsu Kaisen, the manga and anime series created by Gege Akutami. This version is tagged as a Monster Strike clip, the mobile game that has featured Jujutsu Kaisen characters in collaboration events. Short Japanese voice lines like this spread through soundboards, edits and reaction videos because they carry a character's attitude in under two seconds. Fans keep using it for arrogant, unsympathetic reactions, where a single cold remark says more than a longer explanation.
About this sound
Naoya Zenin says Hidoi naa in this short Jujutsu Kaisen voice clip from Monster Strike, a cold, mocking line fans use for cruel or unfair moments in edits.
This is a short, sharp voice line from Naoya Zenin, the arrogant sorcerer from Jujutsu Kaisen, saying the Japanese phrase Hidoi naa, roughly meaning how cruel or how terrible. Delivered in a calm, smug and slightly drawling tone, it sounds less like shock and more like amused contempt, as if he is enjoying someone else's misfortune. The brief pause and flat inflection make it feel cold and dismissive, which is why it lands so well as a reaction. It gives a scene an instant sense of cruelty, arrogance and dark humour without needing any explanation.