Issen: Concussion

After repelling or dodging a strike from an opponent while in Issen Stance, the user either sheathes their sword or turn it towards the opponent with the dull side facing the opponent. Then, the user strikes the opponent on their head or neck with the sheathed sword or its dull side. With this method, the strike does not kill the opponent, rather it renders them unconscious for a while. The user can gather chakra within their attack to deal additional damage and lengthen the target's unconsciousness. This technique is best used during friendly sparring sessions and kenjutsu tournaments to knock out the defeated opponent. It can be used in battle to knock out high-priority targets for safe retrieval.