While the exact contents depend on the source of your file, videos with this naming convention typically fall into these categories:
A playful troublemaker who commits "wanton wrongdoing" without hesitation and loves to prank others. Mutsuki 11-28-22.mp4
An animated "Live2D" interaction from the game. Mutsuki is known for her mischievous, "devilish" personality and often teases the player (Sensei) in these scenes. While the exact contents depend on the source
Based on the filename , this video most likely features Mutsuki Asagi , a popular character from the mobile RPG Blue Archive . Mutsuki 11-28-22.mp4