Enryu's Thorn

Enryu's Thorn, also referred to as The Real Thorn, The King Slaying Thorn, The Thorn to Kill the King or simply the Thorn was a massive object found at the location where Enryu killed the 43rd Floor Guardian. The Thorn was subsequently transformed into an Ignition Weapon by the Workshop researchers by an agreement with FUG. It now hovers above Viole's right shoulder in a compressed form.

History
Enryu's Thorn is an item surrounded by mystery. Not much is known, solely that it was a massive object found at the location where the Irregular Enryu killed the 43rd Floor Guardian. It is divided into four pieces, the first one was found by David Hockney. Then Hell Joe had three of these excavated, he handed at least one of them to FUG. The last part has yet to be found.

Later, FUG found that it was "dead inside and had a hollow body" and could not be used. The organisation subsequently worked with the shady scientists of the Workshop to try and find ways to create living Ignition Weapons so that it could be used to fulfill their objectives. FUG's intention was to give the Thorn to the Slayer candidate Jyu Viole Grace to increase his power and aid them by killing Zahard. However a faction within FUG lead by Karaka and several Elders decided that such a plan was too risky and instead planned to merge Viole with the the Thorn.

The Thorn was hidden within an aquatic arena being used for the Workshop Battle Finals. In a turn of events it was stolen by Jyu Viole Grace. According to Hwa Ryun, the "Fake Thorn" given to Viole acted as a "bowl" for the real one. When Beta trapped Viole inside the true Thorn's chamber, it started to slowly react with the original and begun its summoning. During the battle against Reflejo, the Thorn emerged from its container, allowing Viole to win against Reflejo.

Powers and Abilities
When activated, the Thorn drastically enhances Viole's Flow Control. However it also seems to tire him greatly. Koon deduced that it forcibly controls the Shinsoo in an area, a power that he considered "near god-like". However SIU said that the Thorn wasn't fully activated yet and that it may work differently depending on who's using it, meaning that we haven't even seen its full power yet. Also, SIU has mentioned that it is indeed a growing weapon meaning it can grow to be stronger than it already is and that it would burst out when needed. Currently, Viole is able to use it for 10 minutes per day; if he attempts to use it for any longer he runs the very serious risk of the Thorn overtaking his mind and body and then going berserk.

Notes and Trivia

 * During the Workshop Battle, when combined with Baam, the Thorn was referred to by the following item code: SS-1SSA.
 * The Thorn cannot talk.
 * It is fitted with an "invisible mode".
 * The name was originally "Thorn" in the unofficial translations (the Korean uses "가시", for which "Thorn" is likely a more symbolically accurate translation than "Needle"). Line Webtoon now uses "Thorn" as well.
 * Rachel can theoretically utilise a Thorn as well, since she is also an Irregular.
 * Mysterious weapon left by Enryu for the child of the prophecy.

Alternate Translation

 * Enryu's Needle
 * The Real Needle
 * The King Slaying Needle
 * The Needle to Kill the King

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