is there a consequence of using death note?

Yup there is. One is that the person that uses the death note will not go to heaven hoặc hell.

The immediate effects are that bạn can't go to heaven hoặc hell, just 'Mu'. It's hypothesized that this actually means bạn become a Death God, since Shinigami's live in neither heaven hoặc hell, and in the Relights there is a Shinigami who might be Light, but we aren't sure.
Other than that, there is the complete and untter shattering of conscience, morals, and sanity. If bạn keep killing, you'll lose your conscience, morals and sanity. If bạn don't, most likely you'd simply destroy hoặc disown it, but still... some piece of your sanity would be gone whether bạn Mất tích the memories of the Death Note hoặc not. Absolute power corrupts absolutely.

With using the death note, there are of course consequences, like most things in life. Some of the consequences are that the human hoặc any human that shall use the death note can either go to heaven hoặc hell, the person in possession of the DEATH NOTE, is possessed bởi a God of Death, until they die, and lastly the owner of the DEATH NOTE can in exchange for half of his/her life, can get the eyeballs of a Death God, which enables them to see a human name and their remaining lifeline when looking through them...

Yrs, YOu can not go to heaven hoặc hell just "mu" One of the most poular theries is that bạn become a shinigami. bạn also end up losing your life to the shinigami.