I was watching some AMVs on YouTube and one of them mentioned the tragic familial backstory each character has:

- For Luffy, it was Ace, Sabo, Dragon, Garp, and Shanks
- For Usopp, it was Yasopp, Banchina, and Kaya
- For Nami, it was Bell-mère and Nojiko

Zoro is the only member of the Pre-Grandline crew that we know nothing (to my knowledge) of his family except for Koshiro and Kuina (they were the only thing close that I could think of).

Was there ever anything mentioned about Zoro's family?