Kayin is a friend of Eiji Shinjo and is described as being a bounty hunter going by the name of Storm. He was trained in swordfighting along with Eiji by Eiji039s older brother Sho until Sho had suddenly disappeared. Kayin had entered the first Toshinden tournament to avenge his foster father039s recent death who he learned had been killed by a participant who won the previous tournament. He eventually learned that Sho was the perpitrator and his friendship with Eiji was nearly shattered because of this. Kayin was then forced to enter the second tournament after his adoptive daughter Naru was kidnapped by the Secret Society. At the end of the event he managed to help bring down the fall of the Secret Society and rescued Naru from danger. Kayin had then discovered that he and Naru were being targeted by the Organization. He participated in the third tournament hosted by it and managed to help destroy the Organization. However he realized that Naru would always be in danger because of him and he decided to leave her in a housing institute. He handed down his Excalibur sword to her and then disappeared. It is unknown of what happened to Kayin after the events of Toshinden 3 but it is likely that he may have died because he appears as a ball of light to Naru from within her ending in Toshinden 4. Interestingly enough despite Kayin039s nationality being depicted as Scottish and later English he speaks with a clear American accent. It has long been rumoured that his nationality was given as British so as to avoid an infringement lawsuit from Capcom as Eiji and Kayin are virtually identical to Capcom039s Ryu and Ken from Street Fighter save for their weapons and nationalities.