Is it necessary to play the previous games before pirate yakuza?

Me and my friend are playing the entire yakuza saga on the chronological order, im currently on yakuza 4 and hes on kiwami 2, he bought the pirate yakuza for us, we are really excited to play and i might get a pc next month, we need to play all before that to avoid spoilers or is it a canon game with its own story that doesn't exactly needs the other games to understand? Like, i know Majima lost his memories in this game, but will the previous games be mentioned?