Serpent Breathing (蛇の呼吸,Hebi no kokyū?) is a Breathing Style derived from the Water Breathing. It focuses on twisting and bending the sword like how a serpent slithers. The attacks are not direct and constantly meander which can ultimately strike anywhere.
First Form: Winding Serpent Slash (壱ノ型委蛇斬り,Ichi no kata: Idagiri?) - Obanai rotates and releases a circular slash in front of him.
Second Form: Venom Fangs of the Narrow Head (弐ノ型狭頭の毒牙,Ni no kata: Kyōzu no Dokuga ?) - Obanai goes behind his opponent at blinding speed and lops off their head.
Third Form: Coil Choke (参ノ型塒締め,San no kata: Toguro Jime?) - Obanai curves his sword like a slithering snake and quickly decapitates his opponent.
Fourth Form: Twin-Headed Reptile (肆ノ型頸蛇双生,Shi no kata: Keija Sōsei?) - Obanai leaps forward and performs a horizontal slash that slices through the target.
Fifth Form: Slithering Serpent (伍ノ型蜿蜿長蛇,Go no kata: En'en Chōda?) - Obanai using his bending sword, curves it right to left at incredible speeds. This technique is capable of decapitating multiple targets at once.