Nico Robin
They were playing hide and seek with the Mugiwara, and first you find Luffy, then Sanji, Sabo and when you go to see if there is someone hiding in a small room you find Robin hiding
About Nico Robin
They were playing hide and seek with the Mugiwara, and first you find Luffy, then Sanji, Sabo and when you go to see if there is someone hiding in a small room you find Robin hiding