This is a specification that was added to Katsuki's Hero Costume, which stores his sweat to amplify the power and effects of Explosion to their fullest potential. Once filled, he can pull out the grenade pin to release a massive powerful explosion. The aforementioned blast was powerful enough to nearly destroy the building Katsuki was fighting Izuku during the Battle Trial.
This modification was created so that Katsuki could release powerful explosions while minimizing damage to himself.
During the First Term Final Exam, Katsuki allowed Izuku to use one of the gauntlets to blast All Might. Izuku commented that the strong recoil took a toll on his shoulder, although Katsuki seems to be completely unphased by it, due to his superior athletic ability.
|Technology and Other Objects|
|Support Equipment||Air Force Gloves • Amplifier Jack • Artificial Vocal Cords • Capture Tapes • Costume • Electromagnetic Soles • Full Gauntlet • Hydraulic Bracers • High Density Weights • Hover Soles • Iron Soles • Jet Pack • Mid-Gauntlet • Quirk Amplification Device • Sevens Loud • Sharpshooting Gear • Wire Arrow|
|Weapons||Capturing Weapon • Capture Gun • Cement Gun • Claustro • Curious Flattener • Grenadier Bracers • Hyper-Density Seals • Taser Knuckle|
|Robots||Camera-Bots • Mini Transport Robots • I-Island Security Bots • Villain Bots • Kanidoge's Mechs|
|Substances||Quirk-Destroying Drug • Trigger|
|Vehicles||Allmobile • Hercules|
|Literature||Hero Analysis for the Future • Meta Liberation War|
|Miscellanous Objects||Provisional Hero License • Targets|