Episode 318

"The Mother is Strong! Zoro's Slapstick Housework Help" is the 318th of One Piece.

Summary
After being denied from various Sword Shops to get Yubashiri repaired, Zoro is tricked into becoming the new "Big Brother" to the Family of Auntie. While Zoro isn't busy doing house work and ducking from his fellow Straw Hats, he is defending the Franky Family from a gang of loan sharks.