i'd be down for buds and i could very likely swing fosters depending on what you had in mind! they have the multiple languages and loss of parenting in common already. could even have been foster siblings for a brief time after he came back to the mainland from his self-isolation after the plane crash. it's all fairly loose really and we have room to play. i can only hope all the defenders are foster siblings because that would be perfectly amazing. bros at the very least, could even be a lawyer bromance he keeps on retainer through his uncle who's running the business while he puts out blazes in the big apple.