StrongArm

, Dāku bāsuto, lit. Dark Burst (ダークバースト) is Grobyc's Level 7 tech in. Upon learning it, Grobyc gains the ability to replace his left arm with a deadlier one, and fire off a devastating laser shot onto a selected target, inflicting heavy damage in the process.

How to Obtain
Take Grobyc to Chronopolis, and then examine the coffin-like box in the locker room on the second floor. He will express shock at the discovery of the Strong Arm weapon, explaining that it was banned by the Porre Army due to it being too dangerous to handle. He will then remove the weapon from the box and learn the tech thereafter.

Description
Grobyc will use his right hand to unlock a certain mechanism in his left arm, before casting it aside. He will then look up towards the sky as the Strong Arm weapon floats down and attaches itself to his left arm socket. Grobyc will then use his right hand, once again, to lock the mechanism before pointing the weapon at the selected target. A purple-colored orb of energy is observed to gather at the tip of the Strong Arm weapon, which is later released as a pinnacle-like laser, which passes through the target's body. As the weapon continues to charge up, the afore-mentioned energy will soon engulf the target completely, before dissipating. The target will sustain damage as it collapses onto the ground from the sheer impact.