A jutsu created by Arui through use of his Kekkei Genkai, Onmyōdō. In the initial stages of the jutsu, the user gathers an immense amount of Yin/Yang energy in their hand, appearing as blue flames. The user then compresses these "flames" around their hand. Similar to the Chidori, this jutsu is then used to thrust into the target, producing heavy damage. It is noted as Arui's most used and signature jutsu, and he has created many variants around it. Arui tends to refer to this jutsu by it's japanese name, Tatsūna, because he thinks it sounds cooler.
This technique is renowned due his extreme cutting nature, caused by the fluctuating and flowing Yin and Yang nature of the jutsu. Because every chakra has a basic yin and yang nature, the vast powers of this technique can use this varying nature in it's advantage, cutting through chakra by alternately using yin or yang nature to break it. Therefore, the technique can rupture almost any physical or chakra-composed defense, shown when it easily cut apart Kuuden's giant metal Hachibi statue. After training under his mother, Arui has refined his skills dramatically, creating many variants around this one.