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.