The training had effectively kept his mind busy, not allowing time or the patience to think about Y/N or the masked villain, or how those two were tied in what way. He continued to self-improve, going for stamina and strength in order to better help him out of situations like USJ, where he was surrounded by multiple villains; something he wasn't accustomed to but had to be dealt with. He had plenty of sleep, but his hours were either packed with training, eating, and other necessities in life, but that was really his only schedule. 

His sweat trickled down his bare chest as he took a deep breathe in, then let out another sigh, before raising his fists once again, and slamming them towards the punching bag, using numerous maneuvers such as upper cuts, hooks, jabs, etc. If he wasn't a pro hero, he could have definitely been a boxer. The sound of the bag being heavily abused by his fists continued to echo the room, as he persistently hit the bag, his gaze empty as his body had a mind of its own to continue hitting.

His mind travelled to somewhere else, where it was a constant drill sergeant for him; encouraging him to last longer, to continue hitting and punching like his student's life depended on it. The blue-haired ringleader of the League of Villains flashed through his mind as he gritted his teeth. He threatened the life of the No. 1 Hero, as well as nearly killing his student. Tch, he had to prepare for things like that. He couldn't allow himself to be beat, he couldn't allow himself to be defeated and unable to protect those that needed him. 

As a hero and a teacher, it was his job to protect and influence. That was the point, and he couldn't do that if he wasn't able enough. What if the League of Villains attack again? He couldn't have come unprepared, he needed to get stronger, better, faster than ever before in order to save future victims that may so happen to be the teenagers he was instructing, now that he knew they could get targeted later on.

When the news came his students were involved with a villain, he was surprised that they had an encounter with the Hero Killer: Stain, a villain that had been wreaking havoc on society ever since his capture, his beliefs and opinions spreading through and plaguing the minds of people. Of course, he can't help but comprehend and understand his grand speech, and if it wasn't for his violent way of supporting it, he would have agreed with it even. After all, he was an underground hero, one who avoided the fame or attention, stopping a majority of the bad guys in the shadows of the night. It was much more common for villains to come out at night rather than day, but that was what caused the big heroes to get their fame. In daylight hours, where they are more seen from civilians, their debuts and appearances can definitely be seen more often than heroes like him. 

Now, he was a fabled myth hero, only people know he exists, people have heard, but never have met the man himself. Some minor news stations had reported crimes that he had solved, some suspected it was him who had stopped it, while they suspected others. The credits didn't matter, he just wanted to help people without the bullshit that hung around being a well known hero. 

That's why he could agree with Stain, but he couldn't agree with his methods. 

Although he was surprised that his students got into a villain encounter, he wasn't surprised who got involved. Tenya, the brother of Ingenium, in which he was attacked by Stain, was no big surprise, as Aizawa should have known he would hold a grudge against the hero killer. He should have been more rational and have known at the beginning. It was no wonder why he chose his internships in Hosu, but he never gave too much thought about it. He cursed at himself at his own stupidity of not realizing, but decided he would scold the boy once he gets back. 

He wasn't surprised that Todoroki was involved either. He figured that his father Endeavor would have taken him to a city with more criminal activity so that he could gain more experience and vigorous training. Just the intimidation from the man told him that. 

Midoriya was a problem child, no doubt. He had always been at the center if a problem occurred, and he didn't know what else to expect. Nonetheless, the boy was rash and passionate as a hero just like All Might, he'll give that to him. He had always caused trouble and issues, but that hadn't especially bothered Aizawa. The green haired boy almost seemed destined to be a great hero, like some protagonist in a manga. 

His own students worried him, as he was concerned if at this rate, they'll continue attracting villain's attention. They already had the League of Villains to deal with, but they may have others. 

All the more reason to train harder in order to protect them. This batch of heroes, Class 1-A, was a special one, and he had a gut feeling that this case of heroes would be unique. Unlike some of the classes he had taught, he had his hopes that this class will succeed. Set aside some triggering attitudes towards a certain purple-haired student, and the stupidity of some others, he believed that this class had a chance in the real world. Yet, he sighed out a breath of wholesome concern. 

The greatest heroes were made out of the biggest struggles and obstacles, and some of them are dangerous, even lethal. If he was sure that this year would be special, then he was concerned. Yes, he was truly caring for their well beings. Their passions and energy he had recognized as a sign of being able to become great heroes. He wanted them to become better heroes than he himself will ever be. Usually, he wouldn't care about his students this much, but after the USJ incident, he realized that these were children he was teaching. They were minors, yet they were being trained and learning how to be one of the most deadly professions. Only very few willfully retired without because of tragedy, injury, etc. Majority of heroes that passed away had died because of murder; from villains. It was the cruel world they lived in, and throwing them into an arena where they had a high chance of having no escape only rubbed salt into the wound. If his predicament was accurate, that meant that these kids would have suffered the most. 

He let out another sigh, knowing he was digging too much into this. This wasn't him, he didn't ponder so deeply about his personal connections or about his job as a teacher. The only time he would ever think this clearly is when he was planning on ambushing a mafia gang, or other anti-villain activities. Either way, this wasn't like him to just think so much about this, it just wasn't him to care so deeply in general. That wasn't him. He wasn't one to just care about others, even though that was part of his job as a hero. He wasn't one to consider the feelings of one and he didn't sugarcoat things needed to be said. He was blunt and straightforward, never to miss a point or become distracted from it, simply because he didn't care anything else about it. So why was he caring now? 

He let out another 'tch' before proceeding to strike the punching bag, sweat glistening on his skin and bare chest as he continued to punch, his tied-up hair flying up and down slightly. His shorts clung onto his thighs tightly as the sweat began to pool all over his skin. Letting out another concentrated thrust of hits towards the bag, he urged himself to continue going despite the aching soreness in his arms, and the muscles practically screaming at him to stop. He knew he had to surpass his limits once again to become a better hero, even if that meant his arms would pay with tiredness and numbness in the end. He needed to keep going, after all he was at this for a good two hours with only very short interludes in between his training. The bag filled with sand must have been abused heavily from his crashing fists, as he stepped back again to regain his composure. 

 He took a deep breath, allowing the air to fill his lungs properly once again, sighing out, and lifting his fists in a steady position. He stepped towards the bag, and let out another tantrum of strong, hard, and swift strikes towards it. Paying no mind to his bruised knuckles on both of his hands, he focused on giving his all on each punch. 

"Hey Eraser. Sorry to bother, but we're about to close for the day," one of the staff said as he entered the room. 

Aizawa stopped and leaned down, placing his hands on his knees to rest his back from standing so long. He pursed his lips tightly as he growled in frustration of losing track of the time. "Yeah, sorry, I forgot. How long have I been at it?" 

Originally, he only wanted to train for four hours, maximum. He had papers to grade, and classes to prepare tomorrow. He couldn't believe that he had taken much longer, the training must have done an especially good job at keeping him busy if he couldn't tell the time. 

"You've been at it six hours. Twice the usual amount than you would do. Something got you upset? You tripped over a villain?" 

"Yeah, something like that. The USJ incident," Aizawa replied, gritting his teeth at the memory. Damn, he wished he didn't say that now. All the rage towards the masked villain returned immediately to him as he clenched his fists, reminding himself he was doing this because he was so weak at that time. 

"Ahh! So you were one of the teachers that was there! I'm so sorry, no wonder why you haven't visited in quite some time. You were recovering weren't you?"

Aizawa grabbed a towel, wiping off his sweat upon his face and chest. Putting on the white tank top he had taken off earlier, he loosened his hair and took off the hair tie, his hair going back to its usual straight and ungroomed hair his most common appearance was known for. Downing on the last sips of his water, he let out another satisfied sigh from the hydration. The duffel bag was stuffed with boxing equipment and gloves, as well as a first aid kit for any emergency. He unzipped the bag, filling it with the towel and the water bottle. 

"Yeah," he groaned, letting a quiet 'tch.' 

"I heard it was scary, even for a pro. They said you were in critical health. Glad you're alright for the most part." 

"They were exaggerating my well being, the press is always like that. It's like they want to create panic from the audience for the heroes. Villains suddenly infiltrating a secured building belonging to the top hero school is definitely... something I haven't seen." 

"I bet. Alright, we're gonna clean up and close. Have a good night Eraser." 

Aizawa nodded in acknowledgement, waving his hand lazily as a gesture of goodbye, as he exited the dojo. 

He trudged home, knowing that tomorrow he'll wake to twenty hellions about to ruin his good week.