Hammer In is an unusual elementless technique, designed to block the use of genetic abilities.
The user launches into a combo of heavy punches, aiming for specific energy distribution points - one hit above the heart, one to the forehead, and the final one to the stomach. Each of these strikes are respectable in power, but their true intent is revealed when the target goes to activate their genetic ability, if they possess one. Due to the specific locations struck, any genetic abilities that the user possesses are repressed, forcing the target to fight at the same level as everyone else. Similarly, it suppresses genetic abilities that are already active, and the effect lasts for at least two or three hours, preventing genetic abilities that activate when the user is at rest from activating.
Due to the potential of suppressing abilities that can potentially make an opponent much stronger than they would normally, this attack bears a C-rank.