#point being: all might's concerns are valid and many of them are shared by inko (esp in the beginning)

[wribbles]

All Might doesn't like Kitkat.

It's pretty obvious - the man can't hide the suspicious/concerned pinch of his face when Izuku mentions Kitkat, which he tries to do less frequently after noticing All Might's discomfort.

And, okay, Izuku understands the suspicion. He hears how vague his answers are, and the way he folds into a stuttering fumbling mess when any authority questions him certainly doesn't help his case!

But it's not what it looks like. No matter how cliche that phrase is, it's true!

Izuku doesn't know any of the details about Kitkat that adults consider important and need-to-know. When they first started out messaging, they both agreed it was safer that way - stranger danger and all that, especially with how young Izuku was.

So, he doesn't know Kitkat's real name, and can only give an educated guess at his specific age. He knows he went to UA, and that he used the Sports Festival to advance from Gen-Ed to Heroics, but that was back near the beginning of their relationship, when Izuku was still desperately trying to prove himself worthy of friendship and would do anything to make Kitkat stay - so when the other boy asked him not to watch the first year festival because Izuku might work out who he was, Izuku agreed. (It's been years since then. He still hasn't seen it.)

(It took him a few years to accept that Kitkat would stay through anything. And he can admit to being intensely desperate in those early elementary years, so soon after being diagnosed and having all his friends turn on him. By now, though, they've been through enough together that there isn't even a question.)

He knows Kitkat is a Pro Hero - graduated years ago - but he never told Izuku his hero name and Izuku didn't ask. Izuku knows the basics of his quirk (enough for him to have gone and written paragraphs of analysis theories in messages, and give his friend ideas for training) and honestly, he would probably recognize it if he saw it, but Kitkat's quirk is invisible until activated, which he rarely does because of the drawbacks, and he's an underground hero with no media presence, so searching for his persona online is futile.

When All Might asks who his texting friend is, Izuku can only tell him that Kitkat is his years-long best friend, who has supported him through a lot of really bad days, and has always encouraged him to be a hero and follow his ambition. Kitkat has never ignored a message, has always been honest with him even if it's uncomfortable, and has never rejected any part of Izuku.

But Izuku can tell those things aren't enough for All Might.

He doesn't quite understand why they're not enough... Izuku knows people by their name and height and home address who are none of those things. Kitkat doesn't need a name, Izuku gave him one easily - does it matter if it's not legal if he still responds to it with seriousness and sincerity? Izuku doesnt need a picture of Kitkat's face, when instead he gets cats and sunsets and small joys that Kitkat hopes can keep them both together long enough to live to the next day.

All Might is absolutely Izuku's favorite known hero, but he doesn't know Kitkat in the ways that matter. Izuku does: you don't spend eight years talking to someone, suffering through the worst times imaginable and sharing joy in the best ones, and not learn them in the most valuable way.

Nothing and no one - All Might included - is ever going to make Izuku doubt his Kitkat.

All Might doesn't like Kitkat.

Some strange older man messaging a lonely quirkless boy? Every day?

Suspicious.

It only made him more suspicious when young Midoriya tried to defend his friend by saying he was a ProHero who had gone to UA - but he couldnt say what his hero name was - or even what his real name was!

As if Toshinori is going to believe there's any truth in a secret stranger saying everything an impressionable and enthusiastic child would want to hear.

Young Midoriya gets defensive and upset, bordering on personally hurt, if Toshinori questions this "Kitkat" too closely, digs too deep. Midoriya quietly tells him that Kitkat has been with him through all his worst days, and that it wouldn't be a stretch to say he's the reason Midoriya is still alive right now...

And while Toshinori's heart clenches at the thought of the pain this young boy must have gone through to say something like that - the sentiment doesn't actually reassure him of "Kitkat". Now this stranger has Midoriya feeling like he owes some kind of life debt, on top of reinforcing their close connection with obviously manufactured lies designed to gain young Midoriya's admiration and respect. And the boy says he's known this older man for years? An even younger Midoriya would be even easier to manipulate.

Toshinori doesn't tend to deal with this kind of evil usually, but that doesn't mean he's blind to it.

Midoriya is clearly not yet in a place where he's willing to trust even All Might against the words of this online friend, but with their new mentor-successor relationship, Toshinori should have plenty of time to slowly build Midoriya's trust in him and introduce thoughts of internet safety and the kinds of horrible people that can be found there, waiting for innocent kids who need someone to believe in them.

Toshinori believes in Midoriya. Hopefully eventually that will be enough for the boy to see reason.

"Kitkat" - whoever he is - is not going to get what he wants. Not if All Might has anything to say about it.