First, revealing one of his secrets!

"...so, what did you want to discuss, Uncle Might?" Melissa asked All Might as he closed the door of the private room before turning towards her.

"...I should tell you that your father, even though he made a mistake, wasn't entirely wrong to worry," All Might sighed, steam starting to rise from his form. "We were keeping something from you that you learned a little bit about earlier today."

Melissa paused and stared at him. "Um, what exactly were you hiding... And... Why are you steaming?" she asked him slowly.

He then shrunk down into his normal, skinny state. "...this is how I usually look, when I'm not doing Hero Work, or in the public eye," he admitted, even as her eyes widened, and she covered her mouth.

After a moment of staring at him and at how his clothes hung off his body like that, she finally managed to say with a weak, joking tone, "...you seriously need a sandwich, Uncle Might..."

Toshinori stared at her, before chuckling. "You should have seen how I looked not that long ago. Believe it or not, I was worse..."

"...why hide this from me?" she asked him.

"...well, before, maintaining my muscle form took no effort whatsoever, so I was basically in it constantly, so there was essentially no reason to show you... But then, I got into the fight of my life about six years ago. David mentioned I suffered severe injuries, right?" he asked, before pulling up his shirt, and Melissa gasped as she saw the scarring.

"What happened?" she asked.

"Long story short, I lost a lung and my stomach. Even with the surgeries, I was barely able to maintain my muscle form. My time in it per day was reduced to a matter of hours. But I hid that fact, because I didn't want the world to know I was weakening. David knew that much," Toshinori grimaced. "Of course, I was recently healed completely of the injuries by someone with a unique power. The scarring is purely aesthetic now." He dropped his shirt. "But I'm still far from what I was at my prime. Spend this long as a Pro Hero, constantly putting your body at risk, and things start to break down. My Quirk is indeed fading, and Dave thought that he could reverse that with his device. He still made a mistake, but... It's one I understand, and don't hold against him. I'm not telling you to forgive him right away yourself, but... I figured you deserved full context for that much at least."

Melissa's bottom lip quivered, but she maintained a strong facade. "I see... Is... Is that all you wanted to discuss?" she asked him.

He grimaced and turned his head. To the side. "Not... Quite. I... Also made a mistake..."

She blinked. "What do you mean? You didn't do anything wrong tonight," she told him, and he shook his head.

"Not tonight. Long ago, shortly after you found out you didn't have a Quirk," he told her, and she stiffened. She remembered the conversation they had had so long ago. How could she have forgotten it? "...let me tell you a story... Of how, around a year ago, I met someone who reminded me what a Hero really was..."

Melissa, unsure where this was going, nonetheless took a seat to listen.