Because your query includes "E03" and "HDTV x264," it is possible the file refers to a specific airing or fan-distributed version of an episode where this song is featured prominently, or the Indonesian series mentioned above. Safety and Legality Note
Based on the title "Katharsis E03 720p HDTV x264," you are likely looking for the third episode of an Indonesian thriller mini-series or a specific anime-related release. Potential Match: Katarsis (2023 Series) Watch Katharsis E03 720p HDTV x264
"Katharsis" is also the title of the opening theme for the second season of the anime , performed by TK from Ling tosite sigure . Because your query includes "E03" and "HDTV x264,"