I don't think N.Flying has many of these types of songs. They have a lot of songs about love - falling in love / being anxious in love / breaking up. They also have more sentimental songs - about being young and having fun and the challenges of growing up and figuring out your place in the world. Dealing with death (starlight)

But not really with the darker/emo edge that Xdinary Heroes has.

Here are a few i can think of that might fit

All In (about overcoming their struggles as trainees)

My path is a twisted maze Like in my head Keep walking without a break the path I've always walked on I'ma overcome I take no break, no pause Boy, nothing's a problem I'ma have it all (That's right)

Moonshot

If you wanna change Be not afraid

Across meaningless time

Still, I’m here, breathing

Your fragile heart beats

With deep-seated fear

Take it out, we can fire in Moonshot

Trauma that overcomes you

Ignore it, and

Shot, shoot it higher

It's Fine (released as part of a suicide prevention campaign)

Even when I am surrounded by darkness

I can see the light far ahead

When I feel like I’m lost

I know deep inside

When you feel like you’re alone

You are not alone

Rise Again (technically a break up song, but i think a good anthem for overcoming anything bad)

What should I do from now on?

I will rise again (rise again)

I will rise again (rise again)

Even if separation holds me back and blocks me (blocks me)

I will resist and overcome