Mha x Naruto a.k.a team 7(+ Shikamaru) vs Aizawa who breaks first
Izuku still gets ofa the same as he does in canon, though to be fair with much less tears. He cleans the beach, goes plus ultra, and probably does not sleep for that entire couple of months
All Might is CONCERNED about several things but honestly is not the best judge for what is normal or not so just brushes it off as kids these days(even if in the back of his head he knows something is wrong, that no kid should move like an veteran pro who has seen all the darkness of the world)
Izuku takes ofa and it's not the weirdest thing he's ever done to be fair. He doesn't really feel that different so he just shrugs and goes to UA.
He still falls, Uraraka saves him. Neither of them clock each other as anything other than a familiar face they have seen before
He does the entrance exam, thanks the heavens he can focus better these days, but academics will never be his strong suit. A giant battle where he fights giant robots.... Well Izuku has never in his life backed down from a challenge
The only issue with this whole thing is that Naruto's fighting style revolved around hitting as hard as he could, getting hit, and then hitting again while his opponent was confused about how he wasn't dead yet.
Izuku, Does not have a healing quirk of any kind and his punches aren't going to do much against ROBOTS.
He barely manages to scrap a couple of hits, nearly breaks his ankle parkouring around and generally makes a fool out of himself but still jumps at the zero pointer because even this version of Izuku is a hero
(meanwhile Uraraka on the ground has put two and two together, mostly because there's only one person that she has ever met that would be this dumb and do it with a smile on his face)
Izuku breaks all his bones but does manage to break the zero pointer as well. He's still smiling.
Aizawa watching this gets a sinking feeling of dread. He has a feeling his class is going to be interesting this year
All might is coughing up blood in the corner trying to wrap his head around how his successor is still smiling as if his bones aren't broken as if he nearly didn't fall to his death