They do, and begin moving.

"Of course, I'm in," Momo nodded. "We can't do nothing." And of course, she was hoping that this would be one hell of a bonding experience for Melissa and Izuku. If they were going to take a risk, she wanted to take what advantage she could for the harem.

"...if we at least consider a sitting the mission if it gets dangerous, I will also join," Iida nodded. Everyone else slowly started to agree. Even Mineta, despite crying in fear, exclaimed that he would join.

"I'm going too!" Melissa added, looking firmly at them all.

"But Melissa, you don't have a Quirk, or even training!" Izuku protested.

"We will need her to reset the security system," Momo cut in before Melissa could argue that same point. "None of the rest of us know how..."

"Mei might be able to figure it out..." Izuku said slowly.

"Only if she doesn't blow up the whole tower on accident when she's at the controls first," Iida grumbled. Izuku turned to Iida and opened his mouth to argue... Then slowly closed it, **** to acknowledge that that was much more possible than he would like to admit.

After a couple more minutes of discussing the plan, they all came to an agreement on the details. "Then let's get going!" Ochaco declared as Izuku exited the room and moved back to the glass floor

As he did, he reached into his pocket... All Might's hair was there. Currently, he was stuck with about ten minutes worth of Embers for One For All... He mentally calculated. Melissa had mentioned two hundred floors that they would have to ascend to get to the main control room. Would that be enough time for it to make a difference if he ate the hair now?

He considered it for another moment, before deciding it couldn't hurt. The exercise might speed up the digestion enough for him to regain One For All in full at the end at least. Either way, he would have to ration each use of the Embers until then. He gulped the hair down, and stood at the railing.

Sure enough, All Might noticed him, and a look of fear entered his eyes. Izuku had no doubt that All Might already knew what he was going to do, and was wordlessly trying to plead him down from it. He shook his head, and All Might grimaced. "Everything will work out, I promise. You'll see!" Izuku thought as he turned and ran back to the others.

Unseen by him, a rueful, prideful smile split All Might's face. He knew he should be angry at Young Midoriya, and scold him for going against his orders... But then... If he wasn't the type to step up and act when others needed him to, regardless of any other considerations, then All Might never would have chosen him as his successor. And because he was his successor, All Might knew that he could put his faith in him.

...

"Damn it, how many stairs are we going to have to go up?" Kaminari panted as they reached Level 20.

"Weren't you paying attention when Melissa briefed us, or were you too busy perving on her?" Kyoka asked him flatly, and he flushed, not wanting to admit it was the latter. "It's 200 levels!"

"That many!?" Mineta exclaimed, tearing up.

"No sense crying about it," Izuku stated as they kept running, reaching Level 21. "The Villains have control of the elevator, so the emergency stairs are the only way up. We'll just have to bear with it, even if we all develop an irrational hatred of stairs by the time this is over..."

""Irrational," nothing," Setsuna snorted. "After 200 floors, any hatred of stairs will be very rational..."

Ochaco turned to notice that Melissa, wheezing heavily, lagging behind. "Melissa? Do you need me to use my Quirk on you?"

Melissa stopped a moment, catching her breath as she leaned with one hand against the wall. "I'm fine, I can keep going. Just save your Quirk for when you need it..." she put on a brave face as she quickly removed her heels, finding it easier to run barefoot than in high heels.

Izuku noticed, and turned towards Momo. "Momo," he instructed, and she nodded, producing a pair of simple blue sneakers.

Melissa blinked as Izuku grabbed them and walked down to her. "Put these on..." he told her.

She shook her head. "I told you, I'm fine. You don't need to use your Quirks to help me..."

"Well... Momo already made the shoes, so it's not like it will weaken her if you accept them now," he insisted. She flushed, before nodding, and put the shoes on. After that was done, they got underway again.