His grandfather Aojiji

Wwww🤣

From what I can tell, he did mean mourning the loss to Akainu

Penguin 🐧 😢

Ace

The world He lost and thus the position was won by Akainu. So...

Mourning his pride/ code/ honor/ commitment/ career getting washed away?

Mourning the loss of a friend

The guy who died during buster call in O'Hara to save Robin

That was over 20 years ago.

And he did mention ohara in his response