Kurokishi's Juinjutsu

Kurokishi secretly places the seal on a person which can cause them to experience immense fatigue.The seal can be applied during combat, and can secretly be placed on the opponent's body. When the user activates it, the curse seal's marks spread around the opponent's body, paralyzing them and causing them to go through immense fatigue. However, one can break free from the seal with a strong enough release of chakra.