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«Flashing Penetrator» (フラッシング・ペネトレイター, Furasshingu Penetoreitā?) is a 1-hit Rapier-category Sword Skill in Sword Art Online, New ALfheim Online and Project Alicization. It is the strongest long-distance thrust skill for rapiers.
To activate «Flashing Penetrator», the player first needs to sprint. Once enough speed is built up, the player assumes a forward bent posture and leaps forward, charging at their opponents at tremendous speed, while leaving a trail of light similar to that of a comet, and causing a sonic boom. Although the skill only hits one target, it blows away anyone else caught in the way. After the usage of the skill, the user is rendered in a considerably long post-motion delay effect.
|Progressive Volume 3, Barcarolle of Froth, Part 8||N/A||When six forest elves lined up in a row and were planning to use the same Sword Skill simultaneously, Yofilis ordered his allies to evade to the side and used Flashing Penetrator to shoot through the forest elves mid-swing, causing all six of them to be thrown into the water.|
|Volume 1, Chapter 19||Episode 13||N/A||Asuna used Flashing Penetrator to finish off The King of Lakes.|
|N/A||SII Episode 18||N/A||Asuna used the skill to pierce through the boss of the 21st Floor of New Aincrad, dealing enough damage to finish it off.|
|Volume 7, Chapter 6||SII Episode 21||Mother's Rosario Manga Stage.006||Asuna charged through a group of players of a boss raiding guild and killed the group’s Gnome leader with the skill, as well as closing the distance to the group’s healers to dispose of them.|
- Almost no player uses «Flashing Penetrator» in one-on-one battles due to the amount of sprinting required for activating the skill.
- A modified version of Flashing Penetrator is included in «Dengeki Bunko Fighting Climax» as one of Asuna's special moves in the form of an Impact Skill.