[... Mentally tripping at the idea that Ion -- Ion -- doesn't have any close bonds back home, but Sanji decides to footnote that and save it for another time. Ion looks at ease and... well, he'd like to keep it that way for now.]

I mean... living on the sea's all I know.

[Leaning his weight against one of the counters, arms folded. His voice turns nostalgic]

I grew up on a floating restaurant called the Baratie, and yeah, sometimes we had to dock for supplies, but we never spent more than a week on land.