“You cannot win, Darth. Strike me down and I shall become more powerful than you can possibly imagine.”
Obi-Wan Kenobi, Star Wars
The following contains spoilers from recent chapters of My Hero Academia. You have been warned.
Deku is finally complete, his full potential achieved! As Deku commences his final duel with Tomura Shigaraki/All For One, we get to see the true extent of Deku’s mastery of One For All. It began when Deku unlocked the second OFA user’s quirk, “Transmission”. Because this was the first quirk to be assimilated by One For All, it had the most time to be augmented by One For All out of all the other quirks in its arsenal. As such, the vestige of the second user warned Deku to only use it as a last resort. To use the enhanced Transmission quirk, Deku had to put one hand on his other hand, which makes it the type of quirk that activates when in physical contact with its intended target. Once the intended target is touched, Deku can control the speed the target moves. In this case, Deku made himself the intended target, which enables him to explosively augment his own speed, velocity, and the power of his strikes’ impact. Like Monkey D. Luffy from One Piece, Deku controls Transmission through the use of “gears.” The First Gear is the base speed upon activating Transmission followed by Second Gear and Third Gear while finishing with Top Gear, which is the final and top speed of Transmission. Deku can wield Transmission’s full power through a technique called “Overdrive”, which has enough speed and strength to match 120% of One For All. In fact, the speed and power is so great that Deku could launch five 120% Smash blows in an instant, creating a massive crater! This power enabled Deku to completely overwhelm Tomura Shigaraki/All For One to the point in which the supervillain could not counter. Sadly, because it should be used as a last resort, Transmission can only be used for five minutes. After that, Deku’s stamina will be spent and he will be out of the fight.
Apart from unlocking the Transmission quirk, Deku also learned to combine quirks like All For One does. One example of combining his quirks was when he fused “Fa Jin” with “Blackwhip”, resulting in the creation of a technique called “Black Chain”, which is a chain-like form of Blackwhip that is further strengthened by Fa Jin. Blackwhip is a form of energy whip generation while Fa Jin is a way to store up and use kinetic energy. By combining these two powers, Deku was able to create an even more powerful and sturdy energy whip that can grapple strong opponents. Another example is when he combines Transmission with Fa Jin, which enabled him to increase his strength and speed with both Transmission and the built up kinetic energy of Fa Jin. This essentially doubles Deku’s physical capabilities to nearly god-like levels.
Not only does Deku unlock his final quirk and learn to combine his various quirks, but he also learns to skillfully switch in between his quirks with extreme speed and dexterity. This was demonstrated when Tomura Shigaraki/All For One was catching on to Deku’s fight pattern and tried to counterattack. However, despite moving at extreme speed, Deku was able to outmaneuver his foe. First, Deku detected Tomura Shigaraki/All For One’s counterattack by using “Danger Sense”. Then he triggered “Smokescreen” to obscure Tomura Shigaraki/All For One’s vision and conceal his movements. Using Smokescreen for cover, Deku used “Float” to fly above out of his opponent’s reach before grappling his adversary with “Blackwhip” and slamming him into the ground. After this quick switch between quirks, Deku resumed his onslaught on Tomura Shigaraki/All For One until he blasted a hole in the villain’s torso.
Overall, Deku truly has become the world’s greatest superhero at this point in the story. He has reached a level of power that not even All Might could match. In fact, it has been said that his power has become so great that it can distort the laws of physics. The new Symbol of Peace is truly born and Deku is finally ready to lift the mantle from All Might’s shoulders. Now we see two overpowered titans clash as Deku and Tomura Shigaraki/All For One decide the fate of the world.