So'unga

[[Image:sounga.jpg|frame| So'unga shown in [[InuYasha the Movie 3: Swords of an Honorable Ruler]]

Former property of the great dog general (Inu no Taishou), InuYasha and Sesshoumaru's father. Unlike Tessaiga and Tenseiga this sword was not forged from one of his fangs. Not much is known of So'unga's history other than the dog demon aquired it on his own and it's said that he was the only y&#333;kai of few who could wield it without being posessed by it. In InuYasha's timeline, only Sesshoumaru is also able to use and wield So'unga without being possessed by it by overcoming So'unga with his own demonic power.

Only one of So'unga's demon attacks is known: Gokuryuuha (Infernal Dragon Blast or Dragon Twister). It looks like a big purple tornado, its center glowing pink/light purple. We also get to know from InuYasha the Movie 3: Swords of an Honorable Ruler that So'unga's special ability is to resurrect both human and y&#333;kai. All enemies slain by So'unga become its zombie slaves.

So'unga attempts to possess anyone who tries to wield it. However, it failed on InuYasha's father and tried to get revenge by attempting to possess InuYasha. InuYasha fought back and, with the help of Kagome's and InuYasha's necklace and the word "Osuwari," they managed to force So'unga to let go of InuYasha. So'unga was later defeated by the combination of powers of Tessaiga's bakuryuha and Tenseiga's souryuha. The attack also opened the door to another world, sealing So'unga for good in it.

Dragon Twister
The ultimate attack of Sounga. An attack from a dragon of hell that is more powerful than Tessaiga and Tensiega by themselves. A huge orb is formed at the end of the sword rotating a huge mass of hell wind wrapped around the orb. This can easily block the backlash wave and bring much disaster. The twister is extremely huge and is something to be reckoned with.

100 zombies
No real specifc attack, anything killed by So'unga comes back as zombies under So'unga or the wielder of So'unga's control. The only way to destroy them is with fire (Fox fire) or sacred powers (Sacred arrow or Sacred sutras). Brings back 100 zombies.

Demonic Control
Controls the wielder if they are weak enough.

Destruction
The sword bascially brings nothing but death. Known as the sword of hell. (Tensiega-heaven and Tessaiga-earth).

Hell Spike
In the movie So'unga fired black spikes from his scales.

Hell Revealed
So'unga was so powerful that it opened the gateway to hell. After defeating So'unga, So'unga went to hell which closed the gateway that was previously open.