Harry Potter and the Half-Blood Prince (2009) : Rated PG for scary images, some violence, language and mild sensuality. Harry Potter and the Deathly Hallows: Part 1 (2010) : Rated PG-13 for some sequences of intense action violence, frightening images and brief sensuality.
This cursed seal is used by the Hyūga clan in order to protect their kekkei genkai, the Byakugan. Members of the clan's main house brand members of the clan's branch houses with the cursed seal so that, when they die, their Byakugan will be sealed away, preventing its secrets from being learned by enemies.
The hyuga have to be in range in order to attack for eg. the 8 trigrams technique and their only defense is rotation which is not much of techniques against an uchiha who has a lot of energy or chakra so an uchiha would win.
Hyuuga clan follows a tradition where the main branch head brandishes every branch member with a curse mark when the main branch's heir turns three. This curse mark seals off the Byakugan upon the user's death so that it can't be stolen.