It's an optimistic sentiment, and Hoseok is generally a fan of optimism. It's one of those things that might be sort of misplaced, and of course there are things he's a lot more realistic about, things like his own future, but he's learned that positivity makes the hard times less gloomy. He likes being supportive of his friends, feels good when he can bolster their spirits, can cheer them up.

Jungkook's doing that for him now, trying to take a bad situation and find something positive about it. And then Jungkook mentions his dad, about how his dad leaving brought him to where he is now, and Jungkook doesn't say it but there's something in his tone that might be an implication; if Hoseok had to guess, he'd say Jungkook wouldn't even think about giving up his life now to be able to grow up with his own father, even it if meant getting to live with two people who love him, who don't hit him.

Hoseok loves his friends, he loves them all so much, more than anything. They're his family, they take care of him, take care of each other, hold each other up. Hoseok wouldn't know how to smile without them, wouldn't have any kind of future to look forward to.

But if he had the choice, if he could have his mother back, could return to that amusement park and count all the way to ten, uncover his eyes and see her standing there, there's a big part of him that wouldn't be able to say no. Even knowing that having her might keep him from meeting these boys, the people who matter most, who will always matter most.

He's glad it's not a decision he'll ever have to make.

"You're right," he says, watching Jungkook dip his toes in the water, the ripples he creates, cause and effect. "It's good that we can't go back. I mean, we'll always make new mistakes," he adds with a laugh. "And this one, telling Jin hyung... It's not the worst mistake I've made."