What a curse to be ever understanding but never understood

Remake version of La vie est belle ( Life is Beautiful )

Before he named himself.
He was known as Icarus, the foolish.
Attracted to the light of the day, the ambition to fly too high in the sun.
Burn his feathers, his wings.
Fallen then reborn from his demise.
Lost yet wondering.
He never see the end of his life.

Icarus turned to Theseus

Theseus
Hidden among the mortals trying to understand what emotion is,
Finding where is home, what is like to have a family.

Or

Theseus an old suicidal immortal loss a family and gain another.
The loss family regrets try to gain him back. It's harder than it looks.
Especially if the immortal has a motto, "It is what it is"