This was definitely something unique to say the least. I'm not a fan of vtubers at all. Though the way I phrased it makes it sound like I hate them or something, it's just that I have never been interested in that side of otaku culture and only gained some knowledge about it through random memes. This is relevant because I barely knew Marine Houshou before watching this, yet despite that I honestly thought it was "good". "good" in quotation marks because I'm still reflecting on what I really watched, but what I can guarantee is that I did enjoy what I watched. I definitely wasn't expectingsomething like this going into it (was anybody?), especially considering that it's an MV made by a vtuber and her agency, and it was no doubt a pleasant (and erotic) surprise.

To be honest, Marine's voice in Marine Shukkou wasn't exactly my cup of tea, and I didn't like her singing that much the first time I heard this song. The more I listened to it though, the more I started liking it. The music is clearly well-produced and catchy, plus there are many parts in the song where Marine comes off as really charming – albeit unconventionally, if you get what I mean. The lyrics are surprisingly funny. I say "surprisingly", because it could have easily been the exact opposite given the amount of lewd humor and content (well, 100% of the MV). They somehow not only avoided that, but also made the MV very entertaining to watch. That's a big fucking achievement.

Nothing else to say really. I'm just glad that there is a vtuber who is making content like this, and definitely not for the reasons you are thinking of. The real question is, will someone actually open the treasure box?