Makemebad35's "How To" videos (partially lost web series; 2010)
In 2010, YouTuber Makemebad35 uploaded a string of comedic sketches based off of the How to videos format. The series of sketches involved him and a girl trying to complete certain tasks while informing the viewers how to execute the said task with Damian either ending up either failing or succeeding. After that, a quote appears.
All 15 videos soon became privatized. The reason for the privatization is that the girl had trouble getting a job in real life as a consequence of her appearances in the videos.
Only 12 of the 15 videos have been found, with one of them being censored and another being a bootleg.
Although it is likely Damian is still in possession of all of the entire series, it's very unlikely that he'll release the rest of the videos, for the sake of the girl's well-being.