Sorry for the late reply.Answer: "releasing it as each foot hits the earth and makes sound."
-It's part of the jutsu so running is a must, though i think you can make a case for a slow walk or a jog in place etc....
Ok perform these like if you are attack me with it.
The sky was bright the wind was brushing against Castiel's face, it was calm yet sightly angry. Castiel sensei was standing in front of him, he explained to Castiel that the next techniques that he was explaining to Castiel, in short he wanted Castiel to attack him with them so with that he started; Castiel gathered his ototon chakra in his vocal chords, then proceeds to release it though his mouth in the form of a simple whistle, the chakra heads towards Castiel's sensei ears. doing so causes a painful ringing to start to produce in his ears, to the point where his sensei becomes disorientated.
(Ototon: Takanari Kichigai) - Sound Release: Ringing Madness
Rank: A
Type: Supplementary
Range: Short-Long
Chakra Cost: 30
Damage Points: N/A
Description: The user, gathering their sound chakra into their throat and emitting a sound (anything from a simply whistle to speaking or screaming, etc), creates a high frequency wave that targets a foe's ear, causing this portion of sound to remain in their opponents' ears, manifesting as a building ringing sound. The ringing continues to grow as time progresses, originally disrupting how a person hears hampering their ability to think clearly. From that point, it starts to mess with their balance until they become incredibly disorientated, and unable to mold chakra properly due to this.
Note: Lasts 8 turns and reduces damage of the jutsu used against the user by -5 until this effect wears off while increasing the chakra cost of every technique the enemy uses by +10
Castiel once again gathers up his sound chakra but this time sends it towards both of his hands, and then slams them together to release the sound chakra, the chakra goes towards Castiel's sensei ears once more, but the effects are sightly different then last, this time it causes paralysis on his sensei.
(Ototon: Midasu no koe) Sound Release: The voice of Midas
Rank: A
Type: Offensive
Range: Short - Long
Chakra Cost: 30
Damage Points: N/A
Description: The user charges sound chakra into each of their hands and slams them together, creating a sound similar to two heavy golden cymbals crashing together. As the hands slam together, it releases a high pitched, high frequency sound wave, resonating in the enemies ear, and causing muscle paralysis upon hearing it. As the loud sound happens, it creates an echoing amongst the field, trapping any who hear it under paralysis, causing slight pain to them, causing their ear drums to bleed. Paralysis lasts one turn but the user cannot use any other sound techniques for 2 turns after using it.