This is a shortened version of a cover, not the original tv size cut of the opening. The title should be instead "Under Star (Cut Ver.)"
I don't think it's "indistinguishable" if you list to this and then the official tv size cut here: https://www.youtube.com/watch?v=NWl5glbSCY4
The elephant in the room: it's a noticeably different vocalist
Extra effects are added surrounding the chorus: in this version, extra guitar strumming and that reverse crash symbol (I think it's a crash symbol?) vs the original where the chorus instantly just leads into vocals over a muffled guitar