David is surprised, but happy to see All Might!

Melissa led them to the lab building David Shield worked at, and went in first, leaving the others to wait. After several moments, she signaled for them to come in. Just as they stepped through the door, she was telling David, "I invited someone to celebrate the progress you made so far!"

"That's right! I am here!" All Might announced, rushing in, and embracing the gobsmacked David. "David, my old friend, it's good to see you!"

"A-All Might, you actually came to see me?" David asked as his assistant, a man named Sam, also seemed stunned. Though Momo also noticed what looked like the barest hint of worry in his expression. She might have imagined it though, and it could just be that he was concerned about a first impression with a Hero as famous as All Might, so she paid it no mind.

"Of course! Your daughter invited us!" All Might stated, pointedly ignoring Izuku fanboying at the sight of David.

"Actually, I invited you and a plus one," Melissa noted, smirking at All Might, who paused as he released David, and suddenly looked a little sheepish. "Though, if they all have I-Expo tickets regardless, I suppose we can let it slide. Besides, they're all students of his, so it's fine. Well, other than Hatsume from the Support Course, and Ms. Midoriya here... Actually, why did you all come?" she asked curiously.

"Oh, um, I'm basically All Might's apprentice, though we're trying to keep that on the down low, and well... They're all my girlfriends and mother," Izuku flushed, snapping out of his fanboy mode.

"...huh, wow, you're all dating him?" Melissa asked Izuku's girlfriends, shocked. "...he must be something special, huh?"

"Oh, trust me, he is," Momo grinned, getting behind Izuku and embracing him, getting him a bit flustered at being flirted with in front of David Shield and his daughter. "Helps that we're all bisexual and dating each other too."

"And I'm just here with my son," Inko added, rubbing the back of her head. "I almost feel out of place."

"...huh, and when I saw her, I was actually starting to think you were thinking about settling down, and brought a girlfriend," David smirked at All Might. "But that was a silly thought."

"H-hey! What's that supposed to mean!?" All Might sputtered, flushing slightly as David laughed, and Inko went beet red at the idea of being in a relationship with All Might of all people.

David managed to stop laughing long enough to ask, "Are you kidding? You're far too much of a workaholic to maintain a stable relationship."

"...oh, hi Pot, enjoying your reunion with Kettle?" Melissa snarked at David, who protested.

"Come on, Melissa, I'm not that bad!" he pouted.

"Yes, you are!" Melissa and Sam said at once. Izuku started chuckling along with his girlfriends and mother, and All Might let out a deep belly laugh of his own at the tables being turned in the banter.