After he'd knocked out that strange, almost rabid-seeming Villain that had been attacking the Kiyashi Ward mall while Hisashi and his family – not to mention all of the other innocent people who had ended up being caught up in the attack that had hospitalized Midoriya-chan – had been shopping, Toshinori had allowed himself to relax once Tsukauchi had taken charge of the Villain. He'd taken up position in the station's waiting room, a place that'd become almost uncomfortably familiar to him during the course of his work as a Pro Hero, waiting for Tsukauchi to let him know what was going on with that Villain he'd brought in.

More than the lack of any kind of threats, demands, or coherent speech in general, something had just seemed to be off with that guy.

The sudden sound of rushing feet, what seemed to be a lot of them if the sounds he was hearing were right, drew Toshinori's attention. Standing up, wondering if he was going to find himself called upon for something more than what he'd just done, Toshinori quickly found himself facing Tsukauchi once more.

"Tsukauchi, what's going on?" he asked, as soon as he caught sight of the detective he'd worked alongside for such a long time during his Pro Hero career that he'd long since stopped worrying about revealing his identity.

"That Villain you brought in is in a bad way, All Might," Tsukauchi said, as Toshinori fell into step with the man on their way to the infirmary.

He'd spent more than his fair share of time there, on one particularly memorable occasion even being chewed out by Hisashi – in his guise as the Underground Hero, Sensei – while he'd been working as a Pro Hero.

"What do you mean?" he asked, suspecting from Tsukauchi's tone that there was a lot more to the situation than he'd first been set to expect.

"That man… his symptoms are an exact match for the ones we saw in the wake of the Rosaru Massacre," Tsukauchi said, a worried expression spreading across his face as the pair of them hurried toward the infirmary.

The thought of someone else with what'd come to be called Rosaru Fever… Toshinori shuddered, even as he and Tsukauchi hurried to the infirmary. The sight of the Villain- the man that he'd brought in just that afternoon, thrashing and convulsing in the bed he'd been strapped down to, made Toshinori feel like his heart was slowly being crushed. The same despair he'd felt, standing over the beds of those few that had been recovered from the center of the Rosaru Ward – or near enough that it hadn't seemed to matter – as their bodies slowly burned out from the fever; those few that had survived now numbered among those who'd come to be called the Lost.

Still, back then healing Quirks hadn't been so prevalent; back then, Hisashi hadn't yet taken a direct hand…

~MHA~

Staring into the tank that housed his dear daughter – one tank in the row of tanks that had been designed and created in the wake of the Rosaru Massacre, those that had been engineered to treat those who had been suffering from the symptoms of what had come to be called Rosaru Fever – Hisashi narrowed his eyes, considering how it was that he would be able to find out where that creature that had attacked his dear daughter had come from. Before he could begin thinking too deeply on the matter, Hisashi heard a deep, sharp, resonating tone in the earpiece he habitually wore when he was working outside of his home.

Narrowing his eyes, knowing the true meaning of this particular sound, Hisashi made his way over to where Ujiko was monitoring Bombalurina as he worked to stabilize her condition.

"Take care of her for me, doctor," he said, making his way past Ujiko, even as he called upon Warp Gate from within the greater whole of All For One, wrapping it around himself as he departed for the room where he'd stored the costume he used while operating as Sensei.

Checking the coordinates once he was in possession of the integrated heads-up display within his helmet, Hisashi opened a Warp Gate into the room that he had been called to; the room where his next patient was currently waiting.

~MHA~

Looking over as a familiar Warp Gate opened in the room where Tsukauchi and the paramedics were trying to stabilize the man he'd brought in, after the brief rampage at the mall that had hospitalized Midoriya-chan and brought this man to his attention in the first place, Toshinori found his habitual smile widening in relief as he watched Hisashi himself making his way through the Warp Gate and into the room.

"Rosaru Fever; I thought we'd seen the last of this," Hisashi muttered, sweeping into the room with his long, white coat and the tall, white staff that served as not only a communication device, but also gave the impression that Panacea – whatever combination of Quirks Hisashi actually used, to make his incredible healing possible – was the only Quirk that Sensei possessed whenever he was called into dangerous or unstable terrain.

"I thought so, too," Tsukauchi said, turning from the man strapped to the bed to where Hisashi was standing. "No one else has the kind of power we've seen you demonstrate, Sensei, and that seems to be what we need."

"I suspected as much," Hisashi said, seeming like he was about to lean his staff against the wall, before Tamakawa came and took it from him.

All might caught a muttered expression of gratitude from Hisashi, before the man moved to stand over the supine form of the man strapped to the bed; the man who'd attacked him, and if the report he'd gotten from Dr. Ujiko was right this was also the man who'd severely injured Bombalurina, but here he was to heal that same man. For all that his sarcasm and good-natured mockery of the world and almost everyone outside of their family, Hisashi was a genuinely kind person.

Watching Hisashi as he pressed green-glowing hands to the man's forehead and chest, Toshinori sighed softly as he watched as the man's struggling slowly calmed down.

"Sensei, is something wrong?" Tsukauchi asked, making his way over to where Hisashi was standing, tension slowly bleeding into his stance.

"This man's body… It's devouring itself," Hisashi said; Toshinori felt himself tensing, as he looked back down at the man laid down on the medical bed.

There was bloody foam, just beginning to gather at the edges of his mouth, as the man on the bed began to convulse even under Hisashi's firm hands.

"Isn't there anything you can do, Sensei?" he asked, making his way over to Hisashi's side, looking down at the man his old friend was attempting to heal. "I mean, you've handled cases like this before, haven't you?"

"The damage is progressive, and it's accelerating," Hisashi said, the tone of his voice plainly showing how deeply he was immersing himself in the workings of the man's body with the aid of the collection of Quirks he worked with to heal the way he did.

"What does that mean for your efforts here, Sensei?" Tsukauchi asked, making his own way over to where the pair of them were standing.

"His organs are all failing simultaneously," Hisashi said, glowing hands still pressed against the man's chest and forehead. "If I remove my attention from one of them in order to focus on the others, the damage there only grows worse," he barked a humorless laugh. "Even if I did have someone with access to a biological-stasis Quirk, that would only serve to buy time," Toshinori could almost see Hisashi frowning under the helmet that concealed his features. "It's as though someone weaponized the Ebola virus, and used it to infect this man."

"Weaponized Ebola?" Toshinori couldn't quite keep the outburst to himself, but he didn't think anyone in the room actually blamed him.

"Yes; that is what the symptoms most resemble, if in an accelerated form," Hisashi said, head tilted slightly, and Toshinori found his fists clenching almost involuntarily. "Considering his current state, and how fast his symptoms are progressing, this man's body will be a liquid before the end of the day."

Shuddering as he looked back down at the man, who'd started to bleed from the outside corners of his eyes, his large, catlike ears, as well as his nose, Toshinori felt almost as though someone had reached into his chest and squeezed his heart. Shuddering, knowing that Hisashi's analysis Quirks were too refined by all the years, decades, and centuries he'd spent using them for his prognosis to be mistaken, Toshinori reached down to gently wrap his large, powerful hands around the man's neck.

"I'm sorry," he said, snapping it as quickly as he could, before the man could suffer any more than he already had.

Feeling Hisashi's hand resting lightly on his back, Toshinori allowed himself to relax for a few seconds, before pulling himself back upright as Tsukauchi and his fellow officers turned to look his way. There was still a lot of things they were going to need to do, to find out who this man had been, and what had happened to him. Rosaru Fever was bad enough, but this…

~MHA~

Finding out what'd happened to sis had been bad enough, but when they'd actually been able to go visit her… Katsuki growled, reaching out to touch the tall, clear glass – or whatever – that protected sis and kept her safe while she was recovering from whatever that bastard had done to her.

"Dad says that she's going to be all right," Izuku said, hands jammed in his pockets as he stared up at sis as her body struggled to recover from the fever. "But…"

"Yeah," he said, trying as best as he could not to snap.

Both of them knew that they were going to have to go back to school tomorrow; tomorrow, which was coming sooner than either of them wanted, and they were going to have to leave sis here with Dr. Weird so she could actually get better.

"Visiting hours are almost over, Kacchan."

"I never said you could call me that, Hayato," he said, turning to look at another of his old friends – one he'd kind of slipped out of contact with, though considering that Hayato had decided to become a doctor and he was going to be the greatest Pro Hero in the world it made sense – with a slight smirk.

"Not now, you two," Izuku said, turning to the both of them with a firmly unimpressed expression.

"Right, sorry Zuzu," he said, putting his left hand on Izuku's back.

They were all here to support sis; he should really try to remember that better.

~MHA~

Once the both of them had returned to school, Izuku found himself thinking how perversely appropriate it was, the heavy rain that was falling all around him. It almost seemed like the world itself was mourning what had happened to Bambaa-chan.

"Midoriya!"

"Oh, Iida-san," he said, turning to look at his friend as he came up the path to where he was standing. "Good morning!"

"I heard about what happened to your sister, but you shouldn't let it make you late for class!" Iida-san exclaimed, dashing past him, covered from head-to-toe in a hooded raincoat.

"You really went all-out on the rain gear, didn't you?" he asked, managing a small smile as he caught up with Iida as the pair of them made their way to the U.A. building.

"My brother told me about what happened in Kiyashi," Iida said, as the pair of them made their way inside the building to put up their rain gear. "I'm sorry," Iida-san said, reaching out to lay his right hand on Izuku's right shoulder.

"Thank you," he said, as they made their way to class.

The sight of Tenko-nii, dragging Aizawa-sensei's sleeping bag into the classroom, brought a welcome feeling of normality back to the day.

"First off, it's not what you think it is," Tenko-nii said, just before he stepped behind Aizawa-sensei's desk to drop off the sleeping bag and allow Aizawa-sensei to climb out.

"We've got a big class today, on Hero Informatics," Aizawa-sensei said, once he'd stood up behind his desk. "And, like my assistant said, it isn't what you're probably thinking. You all need code names; time to pick your Hero names."

The response to that was about as enthusiastic as Aizawa-sensei had probably been expecting, but Izuku couldn't quite find it in himself to participate in that. He was still thinking about Bambaa-chan, staying with Dr. Ujiko, and struggling to recover from what seemed to be a reoccurrence of Rosaru Fever. When Kacchan handed him one of the small whiteboards that either Aizawa-sensei or Tenko-nii had passed out to the class as a whole, Izuku looked down at the whiteboard, and found that he couldn't quite stop himself from chuckling.

"Thanks, Kacchan," he muttered, looking down at the joke name that his old friend had written for him; he wasn't about to actually use "Brainstorm: the Nerd Hero" as his name, but it was at least funny.

~MHA~

"You're sure I'm not going to be in the way?" little Niseko Sezu asked, holding his stuffed doll of Sensei all the closer.

"Of course you won't. Come on," Tensei said, leaning down to look into the shy boy's silver eyes; seeing how beaten-down Niseko-chan was, even at seven years old…

It was the first time that Tensei had ever found himself actually wanting to shout at a civilian; if he ever had the chance to meet Niseko-chan's parents, or any siblings the boy might have had, he was going to give them a piece of his mind. As he led Niseko-chan up into the third level, where the dorms for those Sidekicks he hired whose home situations were too unstable for them to stay where they originally lived – or else those who simply lived too far away to want to make the commute every day – had all been built, Tensei rested his left hand on Niseko-chan's right shoulder.

After he'd gotten Niseko-chan as well-settled as the little boy seemed to be able to settle down, considering everything he'd been through, Tensei made his way back down to the ground floor. The sound of his phone going off distracted him from the simmering resentment he was feeling for Niseko-chan's parents; he was more than a little glad for that, since he didn't like how resenting people made him feel.

"It's Tensei," he greeted, settling down in one of the chairs that had been set up in the lounge area of his agency.

Smiling as he heard Tenya's voice, Tensei found himself sighing as the topic of their conversation shifted to Niseko-chan and how he was doing.

"Not that well," he said, in response to Tenya's questions. "It seems like being left by his parents for those three years has really had a profound effect on him," he continued, looking up toward the elevator as he found himself thinking about Niseko-chan again.

Really, the boy – Quirkless as he was – had been on his mind nearly since the day they had first met; the thought that anyone would just abandon a family member for a simple disability wasn't one that he'd ever been comfortable with. No one in the Iida family would have ever done something like that, he knew.

Having found himself called back by Tsukauchi for a consultation, Toshinori couldn't help but wonder just what he'd been called back for. Knowing that the man who'd died – the man he'd been forced to kill, instead of watching him die slowly, infected by what Hisashi had described as weaponized Ebola – had been suffering from an ailment that everyone who'd lived through that horrible night had thought was gone forever was unsettling in a way that Toshinori hadn't found himself feeling before. Still, maybe it was just the waiting getting to him.

Toshinori would be the first to admit that he didn't do nearly as well with waiting as Hisashi; he also supposed that patience came naturally to someone who was around a couple centuries old.

"So, what was so urgent that you wanted me to stay here without even going home to change?" he asked, as Tsukauchi made his way back into the room, carrying a manila folder under his right arm.

"We ran some tests on what few samples we managed to collect from that man you brought in," Tsukauchi said, sitting down in the chair opposite him with a defeated sort of slump.

"What did you find?" he asked, knowing that Tsukauchi wouldn't have been reacting like that if there wasn't something monumental and terrible going on.

"We tested his genetic code, and found a partial match to one of U.A.'s students. More specifically an exact, fifty percent match," Tsukauchi said, setting the folder down and bringing out a pair of photographs; one of them was of the man that Toshinori had found himself fighting in the Kiyashi Ward mall, while the other…

"Midoriya-chan?" he asked, finding that the words were almost forced out of him.

The thought that he had been the one to kill Bombalurina Midoriya's father came up for a moment, before Toshinori determinedly reminded himself that that had been caused by whatever Villain group had ultimately been responsible for the destruction of the Rosaru Ward. It was because of them that Midoriya-chan had lost her father not once, but twice. He'd just been there to end the poor man's suffering.

Mungojerrie Elliot, even in death, would have justice for what those Villains had done to him.