I watched this because I love Buck-Tick and I just found out that this existed. I could only find the Victor Entertainment's videos on Youtube but can't seem to find the 10-min HAL video for now... Anyways, there's no much to say about the short videos, they are previews/demos/trailers to promote HAL's project with B-T as guests. They last 1 min each so if you're curious go check them out, at least good music is guaranteed ;) My favourite short was the one with the little puppet (Guernica no Yoru) walking in an apocalyptic stage. The first Episode (Hikari no Teikoku) is the weirdest, it cuts abruptlybut I don't mind as I was not expecting anything in particular. Then the second video, Babel, you can see a gigantic hand trying to reach/hit what I believe it's the moon? Idk.
Anyways, the videos are not outstanding (only exception is Guernica, that tries to tell a story at least) but do yourselves a favour and go check the music at least ;)