An update on the situation.
I have been in discussions with Nexon and NECORD over the past month about the future of the project. NECORD expressed concern over the download links that were available in the video descriptions (the ones hosted on OneDrive). In an effort to get in touch with me, they manually issued the copyright strikes to the ten videos last month. It goes without saying that I will no longer be uploading any of the music to direct download sites, and the existing OneDrive links have been invalidated and removed from all the YouTube videos.
On a brighter note, I may still be able to continue uploading videos to YouTube. NECORD has informed me that they are working with YouTube to set up Content ID for the music that they own. This will ensure that the music is monetized by the rightful owners, regardless of the uploader. The recent videos that were removed by the copyright strikes are also in negotiation for reinstatement.
YouTube uploads are going on a hiatus while this gets sorted out, but I'll do my best to post any new tracks here (in text form).