Kiai (shout)

Kiai (気合, kiai; literally "Energetic Yell") is a Reiatsu technique used by Shinigami.

Overview
The user, after learning to manipulate their own reiatsu and utilize it at their whim, they can aim it toward specific targets or even opponents for the purpose of frightening them and/or surprising them. It can be used through even a simple glare, sending a wave of their own spiritual pressure toward whatever their attention is focused on. Against significantly weaker techniques, the kiai can be used to deflect certain attacks by a skilled Hakudaka.

It can be used in conjunction with a technique in order to strengthen the output of force being put behind the attack.

Trivia

 * Kiai is a compound of ki (気) meaning energy or mood, a(u) (合), meaning join or fit. It is noted that, "One should note that ai, the conjunctive stem of the verb au, does not mean "to join" in this case: when used in the second position of a compound word, ai becomes an emphatic marker". Kiai, therefore, is an energetic yell.