Admiral: I Know the Full Breathing Method

Yi Yan traveled through the world of One Piece for the second time after returning to the world of Demon Slayer: Kimetsu no Yaiba and returning to the same place as the One Black Death Mou. He could actually practice the breathing techniques that he couldn't practice in the previous world in this world. So he started practicing all the breathing techniques to improve himself. Breath of Rock increases defense. Breath of Thunder increases speed. Breath of Fire boosts bursts. Breath of Wind increases damage. Water Breathing increases recovery. Breath of the Sun kills everything. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.