Death Note or Kingdom Hearts AMV Black Parade by My Chemical Romance?

I agree with you; Black Parade by My Chemical Romance goes very well with Death Note because it applies to Light Yagami at the beginning of the series wanting to create a new world and it really relates to Ryuk's cause of purposely dropping the Death Note into the human world so I advise you put some of Ryuk's scenes at the end like when he writes Light's name in the Death Note. I also think that Light Yagami at the end of the series goes amazingly well with Black Parade during the time when he dies and when he gets shot. I think no matter how obscenely obsessed I am with Kingdom Hearts that this song wouldn't go too well with Kingdom Hearts because there are few serious cutscenes which made me realize that this game doesn't go too well with rock and such, but rather with J-Pop or instrumental. Black Parade must also go with Death Note because there are violent scenes which really relates to the song unlike Kingdom Hearts. If you decide to choose Kingdom Hearts, maybe you can use scenes from Another Side Another Story, both Kingdom Hearts ending cutscenes, scenes from the Kingdom Hearts II opening, Birth by Sleep trailer, Xemnas' or Ansem's cutscenes and such, but I prefer Death Note. I hope I answered your question!