Included in some regions or via specialized anime channels. ⚠️ Technical Note
The file name you provided ( [AnimesTC] ) suggests a release from a specific fansub or distribution group. If you are having trouble playing the .mkv file: [AnimesTC] Ayakashi Triangle - 04 (1080p).mkv
The most reliable tool for playing MKV files with multiple subtitle tracks. Included in some regions or via specialized anime channels