Cover by: Orange Camel
The OP we got as-is isn't bad or anything, but with other videos syncing this to the original opening song and seeing just how well it matches up, it made me think that they definitely intended (and likely already matched the animation to) a cover of the original opening, so this was probably closer to their original intent.
![](https://i.ytimg.com/vi/ZpbgfbQpPQI/maxresdefault.jpg)