User blog comment:ToastSoul/Cape Kaga/@comment-78.133.253.114-20161006150549/@comment-26009184-20161008054842

I went and looked up Cape Amagozen and found where 'Amagozen' came from, but there was nothing on it having ever been called anything else. Granted I only looked at that one website.

I did take the chance to finally look at the articles on pixiv and the niconico encyclopedia though. Although both mention it, the nico article in particular quotes one specific line from a book released back in 1920 that says that a 'Cape Kaga' existed along the Shirao coastline in Kahoku of Ishikawa Prefecture before being worn away by the waves at some point. That seems to match up with the one other source I found whenever ago, which also seems to be suggesting something similar.

Then again, both pixiv and nico also point out that DMM has an office in Kaga-shi Misaki-machi, which also could be a reason...