Kusanagi

The "Kusanagi" is an extraordinarily powerful and offense-based weapon that is an evolved form from the Mysterious Rusted Blade. The requirements for evolution are that the user must have one-hit-killed 250 different enemies, you must have a melee weapon with over 350 damage, and your main weapon class must be mainly Lightweight Swords and Katanas.

When attacked with, the player will dash to the cursor, mitigating 75% of damage taken on the way there and dealing 530 damage to all enemies in the way of the slash. The slashing attack can be used at any time, even in midair, as long as the selected area is 5 blocks away from the user and within the user's attack range. Damage increases as more hits are dealt.

FUSION:

Fusion is a rare process that happens when the blade bonds with the human flesh, giving a host of powerful effects. Fusion is possible once the player has slain 200 enemies with the Kusanagi, and also has killed an extremely difficult boss.

FUSION BONUSES:

Combos: Each consecutive hit raises the damage of the next hit by 5% for 1 second. Can stack up to 1,000 times.

Butterfly Edge: The most powerful skill of the Kusanagi. Increases attack power by 100%, raises normal hit amount and also regenerates 10% of damage done as HP.