I’m sending a letter to a friend in Japan and I have some hiragana stickers that I want to use to write “buddy” or “pal” (I’ve already used up the ones that spell out his name in previous letters )
Context: I’m female, he’s male, we’re good friends who spent lots of time drinking together and hanging out when we both lived in Sapporo. I tend to call almost all of my friends “pal” or “bud” but I don’t know how well these translate.
I thought of あいぼ or なかま, I just wondered if anyone could help me with the nuances of them, if they are too masculine/formal/anything else? My Japanese is still very much receptive rather than productive
ありがとう～ in advance! <3