Obsidian Release

Obsidian Release (黒曜石遁, Kokuyoton; English TV "Obsidian Style") is an advanced chakra nature that is the kekkei genkai of the Sansokajiya Clan. Its only known current user is Kojimaru Sansokajiya, and possibly his father, due to them being the only Sansokajiya clan members shown. It is unknown what this nature entails, but it is believed that the primary element of the release is the Earth Release. This kekkei genkai allows its users to generate and manipulate obsidian. Obsidian is useful for physical attacks and reinforcing his taijutsu, and is also highly advantageous, in a more advanced usage, for its ability to contain and expel contaminatory or negative substances, energy or feeling, ranging from negative emotions to poison, amongst others. It can act as a wide range of dangerous substances such as poison or acid, depending on the exact mixture of chakra which the user puts into its creation.