Izuku Midoriya vs. Class A

Izuku Midoriya vs. Class 1-A is a battle fought between Deku and Class 1-A.

Prologue
With Tomura and All For One's escape, and the Search Quirk allowing them to easily locate him, Izuku leaves U.A. in his attempt to keep his friends and everyone else out of danger. After agreeing to partner alongside Endeavor, Hawks, and Best Jeanist to track down the remnants of the League of Villains, Izuku has All Might secretly send personalized letters to his 19 classmates at Heights Alliance, revealing the truth about One For All and why he decided to leave. The members of Class 1-A don't take the news well, and quickly resolve to discover where Izuku has gone.

They are able to deduce that both Izuku and All Might are most likely working alongside the Top 3 Pro Heroes, despite it not being public knowledge. Katsuki, Shoto, and Fumikage each try to get in contact with their respective mentors to confirm, but their messages being ignored only fuels their fire. Some of the classmates question what they could do, and if they should worry if Izuku is with the adults, however Katsuki, knowing him and All Might better than anyone, believes leaving the two of them alone at this time would be the worst possible situation. Ochaco then figures out a plan to help them "force the issue".

Taking advantage of Endeavor being a U.A. alumni, they propose their predicament to Principal Nezu, who agrees and arranges a meeting with Endeavor. When the Hero arrives, he's cornered by 1-A, to his chagrin at being tricked. He refuses to answer when asked about Izuku and All Might, it confirms everyone's suspicions. Katsuki proceeds to approach him, telling him that just like All Might did as the Symbol of Peace, Izuku never takes himself into account and will work himself to death without real help. Already aware of Izuku abandoning All Might and going rogue, not listening to anyone, Endeavor is unsure of what to do.

When Hanta notices Endeavor's phone, recognizing it as also having a GPS, he tosses it, which several of the students catch. The classmates proceed to state their desire to help Izuku, how learning about One For All and his leaving was a shock, but still declaring they want to follow wherever he goes and help bear the responsibility he must carry. Endeavor is wary about letting them go out due to the current state of the world, but 1-A is supported by Nezu, saying that he is welcome back at any time and that every member of the school, past and present, are ones U.A. will protect. He encourages the class to help bring him back. Class 1-A join the Top 3 Pro Heroes in order to find Deku.

Meanwhile, Deku has been searching for days without success for any clue as to the whereabouts of Tomura Shigaraki or All For One, and during the search he has been protecting civilians, taking on villains, and basically solving whatever problems he encountered, with hardly any sleep or rest. When he reaches Kamino, in the memorial plaza where the confrontation between All Might and All For One took place, he encounters a villain called Dictator, sent by All For One to capture him. Using his Quirk, Dictator controls dozens of innocent civilians to attack Deku. Before they can harm him, Dynamight appears and quickly dispatches of the villain when it is giving Deku trouble, and telling the others that he has found Deku.

Soon the other students from Class A arrive in the plaza, with Shoto and Creati capturing the unconscious Dictator. Freed from their control, the civilians escaped the scene, leaving only the students. Deku questions why everyone is there, with Uravity saying they're all worried about him. Deku insists he's okay and that everyone should leave, but Dynamight mockingly laughs at it and asks if he's really smiling now. Deku retorts that in order for him and everyone to be able to smile, he needs to keep moving forward, demanding that everyone get out of his way. Dynamight, Ingenium, Uravity, and the rest of 1-A state how they knew they wouldn't be able to change his mind normally, as everyone prepares to face off.