Chapter 79

Drive It Home, Iron Fist!!!! is the seventy-ninth chapter of Kōhei Horikoshi's Boku no Hero Academia.

Summary
The rampaging Dark Shadow attacks and destroys several trees around it. Then, Dark Shadow attacks Mezou and Izuku, but Mezou is able to dodge in the last moment. After Mezou holding Izuku maneuvers behind a tree, Mezou sees Dark Shadow attacking anything that moves or makes, and he also notes that Fumikage’s regret and indignation are intensifying Dark Shadow’s control over Fumikage and Fumikage's own power. Fumikage pleads Mezou and Izuku to save the others and forget about him. Mezou informs Izuku that they need light to calm Dark Shadow down so that Fumikage can regain control; he tells Izuku that he can distract Dark Shadow while he runs back to the facility for help; Izuku is indecisive due to wanting to save Katsuki as well. Before Izuku can reply, Dark Shadow strikes at them, but Mezou is able to evade. Seeing that their situation is desperate, Mezou tells Izuku that he can either save Fumikage with him or Katsuki by himself. Izuku apologizes to Mezou because he cannot make that decision and says that he has a plan.

Elsewhere in the forest, Mustard destroys Tetsutetsu’s mask. Tetsutetsu holds his breath and tries attacking again, but Mustard fires his gun again, which stops Tetsutetsu. Mustard criticizes Tetsutetsu for only using brawns instead of strategy; he senses Itsuka’s presence nearby and fires at her. However, Tetsutetsu uses his steel body to block the villain’s attack, saving Itsuka. Tetsutetsu is injured in the process and starts becoming dizzy due to the gas. Mustard tells the duo that he can sense anything in the gas that he controls and proceeds to mock Tetsutetsu’s Quirk as well as lack of intelligence and is disappointed that despite training to be a hero, he doesn’t use strategy; he fires more bullets at Tetsutetsu, only for him to block the bullets with his steel body. Mustard is infuriated that unintelligent people like Tetsutetsu are in U.A. and feels there is no justice in the system. After kicking Tetsutetsu down, Mustard prepares to attack the weakened Tetsutetsu once more. Suddenly, Itsuka attacks but Mustard evades; Itsuka enlarges her right hand and smacks Mustard away. Seeing that the gas is a hindrance, Itsuka enlarges her hands and uses them to swirl the gas away; Itsuka mocks the gas masked villain for acting cowardly by using a gun to fight. Mustard prepares to fire his gun at Itsuka for her insult. Out of nowhere, Tetsutetsu appears behind the villain, who was unable to notice Tetsutetsu’s presence due to the gas dispersing courtesy of Itsuka. Tetsutetsu holds his breath and punches the villain in the face with his steel fist, which crushes Mustard's mask and in the process causes the villain to become unconscious. The victorious Tetsutetsu lies down on the ground and regains his breath.

Meanwhile, although the battle is not in their favor, Shouto and Katsuki continue their battle with Moonfish; Shouto is unable to fight properly due to carrying Kousei. The Shouto tries his best to keep Moonfish at bay by blocking his path with ice. Katsuki becomes furious that he is unable to fight back, thinking that firing a huge explosion should stop Moonfish, but Shouto warns Katsuki that the huge explosion will limit their visibility and give the villain more attacking opportunities. When Mezou and Izuku arrive to Katsuki and Shouto's location, Mezou asks one of them to make light. Before he can explain further, Moonfish senses Mezou and Izuku’s presence and sends one of his teeth to attack them. Suddenly, the rampaging Dark Shadow appears and uses its enormous claw to crush Moonfish, destroying Moonfish’s teeth. Shouto and Katsuki are surprised at what transpired. Izuku’s plan was to lure the rampaging Dark Shadow to their location by creating decoys from Mezou’s Replicant Arms which worked. When Izuku is happy to see Katsuki, Izuku is glad that he does not have to save only one of his classmates and sacrifice the other.