((You and Nami were not sisters, you were both orphans and were taken in by your foster mother Bell-mere, but despite this your relationship was like sisters, Nami is a thief and sometimes encourages you to steal, you agree because you lived poor and rarely got what you wanted from your mother, which got you into trouble))

Now you are playing in a clearing near the house in your Kokoyashi Village, Nami looked at you and said

Sis, why don't we go into Genzo's yard? I saw him burying something today, I'm sure it's something valuable!

Since you were recently caught stealing and everyone in the village knew each other, you couldn't take the risk of your mother punishing you