«Deadly Sins» is activated by resting the sword on one's shoulders. The skill begins with a diagonal slash from the top-right to the bottom-left, with the user making a full circle spin, drawing their sword backwards in the middle of the spin in preparation for the next attack. This leads to a second diagonal slash from the bottom-right to top-left, followed by a horizontal slash from left to right. The user then executes an upward vertical slash, performing a backwards somersault. This is followed by a horizontal slash from right to left and another full circle spin, which leads to a diagonal slash from the bottom-right to the top-left, stopping at face height. From this position, the user spins their sword in a full circle, hitting the target from the user's right side.
|Volume 7, Chapter 6||SII Episode 21||Kirito used Deadly Sins against a barrage of seven magical attacks, aiming at their centre to counter the spells with the Sword Skill's elemental damage.|
- ↑ The light effect is blue in the anime.