I've watched it some time ago and it was...really strange.
I honestly had to see it few more times to really wrap my brain as to what the meaning behind every part of the video meant. On the flip side, the music by Teddyloid is simply mesmerizing and I totally want to get the three songs in this video.
Basically, it comes down to one of two interpretations:
1. The guy has a fascination with anime, manga, and video games to the point of being an otaku. He loves them dearly and considers them a big part of his life. When he gets a girlfriend, it becomes an issue, as he has to balance his love for his hobbies with his love for his girl. Eventually, the strain becomes too much for the girl, and is forced to make a decision: his obsession or his girlfriend. He chooses his obsession. He later realizes the mistake he made, as she deeply loved him, and tries to make amends. However, he finds that his obsession has a stronger hold on him than the originally thought, and eventually, it consumes his entire being.
2. Similar to the first interpretation, the dude's a total otaku and finds his obsession to be normal and innocent. It isn't until he begins dating his girlfriend that things take a turn for the worst. Yes, they both love and care about each other, however, over time, the girlfriend expresses her dislike of his obsession, calling it disgusting and perverted. This is evident when the bright, cheerful girls transform into dark, exotic strippers when the 'demon' that looks like his girlfriend shows up. Eventually, he decides to break up with her, being unable to take her harassment over something he holds near and dear to himself. Again, he eventually finds out that he actually cares about her enough to change his ways and does so metaphorically by putting on a battle suit and blasting the now vile and psychotic girls. This is symbolic of clearing/deleting one's web browser history for anything that they might deem damaging or embarrassing. However, he finds it difficult to change completely, and in the end, decides to give in to his obsession and finds solace that they things he loves will never judge or truly hurt him.
On another note, anyone know when these songs (there's three parts) will be available in the American iTunes store? I know they're available on the Japanese store, but I don't want to create a whole new profile in Japan just to get three songs if they'll be overseas soon.
