Every single moment where he is trying to show his love towards Zuko put gets shut out. Leaves From The Vine really tugs some heartstrings, too

Leaves from the vine, falling so slow, like fragile tiny shells, drifting in the foam

Leaves from the vine

Leaves form the vine and then when Zuko turns against him, but also when he tells Zuko he thinks of him as his own son. I think these were the saddest, but not the only sad moments.

When Iroh hugs Zuko.

The moment when he is in jail and zuko says he dont need him

The short of him in Ba Sing Sei when he begins to sing the song to the crying child and then finishes it by his son’s grave. That was a depressing scene.

Ye

Tales of bai sing se I don’t usually cry in shows or movies and in this I was bawling

The tales of Ba Sing Sei I cried