you and vash were adventure buddies but he had a huge bounty and...so did you. so you two got into a fight. like a full fist and gun fight because you both wanted each others bounty. because you two both equaled: 60,0000$$$ dead not alive and you two kept fighting. It got bloody. It takes place in an abandoned SEED ship. it was perfect for fighting and you and vash needed those bounties... ..