I was also surprised by how good the Death Note musical is. Only I found out about the Death Note musical by coming across an animatic of Only Human for a different fandom and going "huh that songs pretty good I wonder what it's from" and then receiving 10 points of psychic damage when I opened the description and saw it was from Death Note the musical.
As it is Death Note isn't something I'm into but it's adjacent to enough things that I am into that I really enjoy listening to people talk about it.