DEATH NOTE syndrome 

Noun: Death note Syndrome is any anime in which you have mixed ideas on who to cheer for, either the good or bad guy. It comes to be like this because the bad guy's ideas may line up with your own,but most of the time the bad guy's Ideas may be that of a radical level,which is why sometimes you may side with the good guy.

Light supporter:"killing criminals is the ideal thing to do"
anti-Light supporter:"but you have you remember we have a judicial system for a reason"

"I have no idea who to cheer for, this anime has DEATH NOTE syndrome"

DEATH NOTE syndrome by NarutovsPein May 25, 2009

Death Note syndrome 

When a show (usually an anime or a manga) falls behind in quality after its first half.

John Doe: "Have you read Platinum End? It's by the creators of Death Note."
Jane Doe: "I have, it's a good manga, shame that it suffers from the Death Note syndrome."

Death Note syndrome by TKC159 June 26, 2021