Disclaimer: I do not own Bleach, or any of the themes and characters affiliated with it. I do, however, own this rhyme. I was a fan of Isshin's long before the truth about his past came out – and this poem practically wrote itself in sympathy to his plight. He's a fascinating character, one I can't help but be intrigued by.
Windows
The dusk-dimmed sky is striped with gray
Lay down the sword, avert the shield
Avert your eyes. It's come to this -
The stroke that you alone can wield.
OOO
The hands that clean and dowse the wound
Once danced amid the stricken slain.
Your scorned the blow, foreswore the oath
And drew your share of love and pain.
OOO
The dance and mask are empty now.
The movements 'cross the board unfold
But draw and dash and drown your hope
In rain-swept night and bitter cold.
OOO
The storm-sun wept to hear your name -
The dragon dozed beneath your chin.
But every word and winding way
Leads back to this - your one great sin.
OOO
You know your duty. Know it well.
All paths return from whence they come
You prayed you'd never have to face
The thing that lurks within your son.
OOO
The dead are bound to stand alone
Beneath the empty, hollow sky
And this the judgment of taboo -
The streaks of gold within his eye.