As you can see from the music video, several people appear (a homosexual woman, a looting boy, an old man traveling, etc.)
They've been through some bad things like broken hearts, wandering through loot, difficult travel destinations, etc.
But in the middle of the song, it shows happy faces along with the upbeat melody and beat.
The song shows the culmination of their bad things.
In the case of a homosexual woman, looking in the mirror after being rescued after a suicide attempt (at the swimming pool)
The predator boy sat still, looked at his reflection in the sword, and thought about this wandering.
The old man fell from the mountain but saved his life and saw himself in the puddle
Through this expression, I took it to mean that I looked back at myself.
Fighting to right the wrong life, the life before it went wrong, and the present life trying to make it right
I think this growing up right now is the Beautiful Now.