黑之契约
描述：A black blade used by warriors of the east.
获得方法：9S初始武器。
属性：
| 等级 | 攻击力 | 连招 | 特性特效 | 升级所需材料 |
| 1 | 150 - 180 | Light: 4 Heavy: 2 | N/A | N/A |
| 2 | 270 - 324 | Light: 5 Heavy: 2 | ATK Speed Up | Rusted Clump x5, Beast Hide x5, Crystal x5 |
| 3 | 420 - 518 | Light: 6 Heavy: 2 | ATK Speed Up | Iron Ore x4, Silver Ore x3, S mall Gear x3, Amber x2 |
| 4 | 570 - 684 | Light: 7 Heavy: 3 | ATK Speed Up + Dark Impulse | Gold Ore x2, Small Gear x3, Large Gear x3, Machine Arm x2, Moldavite x1 |
特性特效：Level 2: Attack Speed Up - 增加攻击速度。
Level 4: Dark Impulse - 血量低于30%时攻击力增加。
