Wmu.e13.540p.bdys_raiona.mkv < Desktop >

The name is divided into several "tags" that identify the content and quality:

The file is a structured digital video file, likely an episode of an anime or television series. The name follows standard scene and P2P (Peer-to-Peer) release naming conventions designed to provide technical specifications at a glance. File Name Breakdown WMU.E13.540p.BDYS_raiona.mkv